diff --git a/abstract-document/pom.xml b/abstract-document/pom.xml
index 452ac6319..c3f783184 100644
--- a/abstract-document/pom.xml
+++ b/abstract-document/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.21.0</version>
+        <version>1.22.0-SNAPSHOT</version>
     </parent>
     <artifactId>abstract-document</artifactId>
     <dependencies>
diff --git a/abstract-factory/pom.xml b/abstract-factory/pom.xml
index d0a6a4330..402297ed9 100644
--- a/abstract-factory/pom.xml
+++ b/abstract-factory/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>abstract-factory</artifactId>
   <dependencies>
diff --git a/acyclic-visitor/pom.xml b/acyclic-visitor/pom.xml
index 9d091750f..a1f2bbf54 100644
--- a/acyclic-visitor/pom.xml
+++ b/acyclic-visitor/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 	
 	<artifactId>acyclic-visitor</artifactId>
diff --git a/adapter/pom.xml b/adapter/pom.xml
index 5d0940b94..c50050037 100644
--- a/adapter/pom.xml
+++ b/adapter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>adapter</artifactId>
   <dependencies>
diff --git a/aggregator-microservices/aggregator-service/pom.xml b/aggregator-microservices/aggregator-service/pom.xml
index 5a23ad063..dbe303809 100644
--- a/aggregator-microservices/aggregator-service/pom.xml
+++ b/aggregator-microservices/aggregator-service/pom.xml
@@ -29,7 +29,7 @@
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         <artifactId>aggregator-microservices</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.21.0</version>
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     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/aggregator-microservices/information-microservice/pom.xml b/aggregator-microservices/information-microservice/pom.xml
index dd29d6830..b15af35e4 100644
--- a/aggregator-microservices/information-microservice/pom.xml
+++ b/aggregator-microservices/information-microservice/pom.xml
@@ -29,7 +29,7 @@
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         <artifactId>aggregator-microservices</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.21.0</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/aggregator-microservices/inventory-microservice/pom.xml b/aggregator-microservices/inventory-microservice/pom.xml
index 66943eb8d..1791ee72c 100644
--- a/aggregator-microservices/inventory-microservice/pom.xml
+++ b/aggregator-microservices/inventory-microservice/pom.xml
@@ -29,7 +29,7 @@
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         <artifactId>aggregator-microservices</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.21.0</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/aggregator-microservices/pom.xml b/aggregator-microservices/pom.xml
index 98caca207..3bd183249 100644
--- a/aggregator-microservices/pom.xml
+++ b/aggregator-microservices/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
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diff --git a/ambassador/pom.xml b/ambassador/pom.xml
index ee04afc0a..2c2cf2c1c 100644
--- a/ambassador/pom.xml
+++ b/ambassador/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
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   <modelVersion>4.0.0</modelVersion>
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diff --git a/api-gateway/api-gateway-service/pom.xml b/api-gateway/api-gateway-service/pom.xml
index bf96a6609..82aa6aede 100644
--- a/api-gateway/api-gateway-service/pom.xml
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     <groupId>com.iluwatar</groupId>
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   <artifactId>api-gateway-service</artifactId>
diff --git a/api-gateway/image-microservice/pom.xml b/api-gateway/image-microservice/pom.xml
index 7ac0b9c90..c4367cdd8 100644
--- a/api-gateway/image-microservice/pom.xml
+++ b/api-gateway/image-microservice/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
-    <version>1.21.0</version>
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   <modelVersion>4.0.0</modelVersion>
diff --git a/api-gateway/pom.xml b/api-gateway/pom.xml
index 7d5adf478..69437e7c7 100644
--- a/api-gateway/pom.xml
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diff --git a/api-gateway/price-microservice/pom.xml b/api-gateway/price-microservice/pom.xml
index c3668a7f9..89aaba7ae 100644
--- a/api-gateway/price-microservice/pom.xml
+++ b/api-gateway/price-microservice/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
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   <modelVersion>4.0.0</modelVersion>
diff --git a/async-method-invocation/pom.xml b/async-method-invocation/pom.xml
index 2bfbed289..c6764f61c 100644
--- a/async-method-invocation/pom.xml
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   <artifactId>async-method-invocation</artifactId>
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diff --git a/balking/pom.xml b/balking/pom.xml
index a6e02fac8..5da1ea43c 100644
--- a/balking/pom.xml
+++ b/balking/pom.xml
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   <modelVersion>4.0.0</modelVersion>
 
diff --git a/bridge/pom.xml b/bridge/pom.xml
index a6082e24f..2480b06cf 100644
--- a/bridge/pom.xml
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   <artifactId>bridge</artifactId>
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diff --git a/builder/pom.xml b/builder/pom.xml
index 2f094dbfb..0ae5bf1e8 100644
--- a/builder/pom.xml
+++ b/builder/pom.xml
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diff --git a/business-delegate/pom.xml b/business-delegate/pom.xml
index c1abe317e..efe9e7145 100644
--- a/business-delegate/pom.xml
+++ b/business-delegate/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<artifactId>business-delegate</artifactId>
 	<dependencies>
diff --git a/bytecode/pom.xml b/bytecode/pom.xml
index 3e6fd5ca6..75b5a8c13 100644
--- a/bytecode/pom.xml
+++ b/bytecode/pom.xml
@@ -29,7 +29,7 @@
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/caching/pom.xml b/caching/pom.xml
index b18d250b8..76578b883 100644
--- a/caching/pom.xml
+++ b/caching/pom.xml
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>caching</artifactId>
   <dependencies>
diff --git a/callback/pom.xml b/callback/pom.xml
index 04ab9c6fa..8b74bcc9e 100644
--- a/callback/pom.xml
+++ b/callback/pom.xml
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   <artifactId>callback</artifactId>
   <dependencies>
diff --git a/chain/pom.xml b/chain/pom.xml
index f992cf787..443e8aee4 100644
--- a/chain/pom.xml
+++ b/chain/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>chain</artifactId>
   <dependencies>
diff --git a/collection-pipeline/pom.xml b/collection-pipeline/pom.xml
index 3390f41db..9af2bd42e 100644
--- a/collection-pipeline/pom.xml
+++ b/collection-pipeline/pom.xml
@@ -27,7 +27,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>collection-pipeline</artifactId>
   <dependencies>
diff --git a/command/pom.xml b/command/pom.xml
index c0eee39bf..dc4f5edb9 100644
--- a/command/pom.xml
+++ b/command/pom.xml
@@ -29,7 +29,7 @@
   <parent>
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>command</artifactId>
   <dependencies>
diff --git a/commander/pom.xml b/commander/pom.xml
index baeee42fd..68ff37420 100644
--- a/commander/pom.xml
+++ b/commander/pom.xml
@@ -3,7 +3,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>commander</artifactId>
   <dependencies>
diff --git a/composite/pom.xml b/composite/pom.xml
index 4698ed141..327e497d7 100644
--- a/composite/pom.xml
+++ b/composite/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   <artifactId>composite</artifactId>
   <dependencies>
diff --git a/converter/pom.xml b/converter/pom.xml
index 412d2509f..ac1b88032 100644
--- a/converter/pom.xml
+++ b/converter/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
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     <modelVersion>4.0.0</modelVersion>
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diff --git a/cqrs/pom.xml b/cqrs/pom.xml
index aeec001b0..beb195473 100644
--- a/cqrs/pom.xml
+++ b/cqrs/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<artifactId>cqrs</artifactId>
 	<dependencies>
diff --git a/dao/pom.xml b/dao/pom.xml
index 743bfc429..911ac6b05 100644
--- a/dao/pom.xml
+++ b/dao/pom.xml
@@ -30,7 +30,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>dao</artifactId>
 
diff --git a/data-bus/pom.xml b/data-bus/pom.xml
index 20d9f817b..e5a294695 100644
--- a/data-bus/pom.xml
+++ b/data-bus/pom.xml
@@ -33,7 +33,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
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     <artifactId>data-bus</artifactId>
     <dependencies>
diff --git a/data-mapper/pom.xml b/data-mapper/pom.xml
index ca48e87ad..baf8add13 100644
--- a/data-mapper/pom.xml
+++ b/data-mapper/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<artifactId>data-mapper</artifactId>
 	<dependencies>
diff --git a/data-transfer-object/pom.xml b/data-transfer-object/pom.xml
index e7b0a5ddc..294f7cbbe 100644
--- a/data-transfer-object/pom.xml
+++ b/data-transfer-object/pom.xml
@@ -28,7 +28,7 @@
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     <dependencies>
diff --git a/decorator/pom.xml b/decorator/pom.xml
index f80026ff9..71c64b331 100644
--- a/decorator/pom.xml
+++ b/decorator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>decorator</artifactId>
   <dependencies>
diff --git a/delegation/pom.xml b/delegation/pom.xml
index 55fb8a147..89b0b7b44 100644
--- a/delegation/pom.xml
+++ b/delegation/pom.xml
@@ -30,7 +30,7 @@
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         <groupId>com.iluwatar</groupId>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dependency-injection/pom.xml b/dependency-injection/pom.xml
index 1dd72abcc..2347cb14f 100644
--- a/dependency-injection/pom.xml
+++ b/dependency-injection/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>dependency-injection</artifactId>
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diff --git a/dirty-flag/pom.xml b/dirty-flag/pom.xml
index caaa58795..31f7edd71 100644
--- a/dirty-flag/pom.xml
+++ b/dirty-flag/pom.xml
@@ -29,11 +29,11 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <groupId>com.iluwatar</groupId>
   <artifactId>dirty-flag</artifactId>
-  <version>1.21.0</version>
+  <version>1.22.0-SNAPSHOT</version>
   <name>dirty-flag</name>
   <url>http://maven.apache.org</url>
   <properties>
diff --git a/double-checked-locking/pom.xml b/double-checked-locking/pom.xml
index 9d3ac69af..4db5d6fe6 100644
--- a/double-checked-locking/pom.xml
+++ b/double-checked-locking/pom.xml
@@ -27,7 +27,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>double-checked-locking</artifactId>
   <dependencies>
diff --git a/double-dispatch/pom.xml b/double-dispatch/pom.xml
index 11f66b114..6b6c9064c 100644
--- a/double-dispatch/pom.xml
+++ b/double-dispatch/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>double-dispatch</artifactId>
   <dependencies>
diff --git a/eip-aggregator/pom.xml b/eip-aggregator/pom.xml
index 3f1e930c2..f56ae78de 100644
--- a/eip-aggregator/pom.xml
+++ b/eip-aggregator/pom.xml
@@ -26,7 +26,7 @@
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         <artifactId>java-design-patterns</artifactId>
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     <dependencies>
diff --git a/eip-message-channel/pom.xml b/eip-message-channel/pom.xml
index e0927ef5a..9d91b7ead 100644
--- a/eip-message-channel/pom.xml
+++ b/eip-message-channel/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<artifactId>eip-message-channel</artifactId>
 	<dependencies>
diff --git a/eip-publish-subscribe/pom.xml b/eip-publish-subscribe/pom.xml
index 4d8711a56..50c29e300 100644
--- a/eip-publish-subscribe/pom.xml
+++ b/eip-publish-subscribe/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<artifactId>eip-publish-subscribe</artifactId>
 	<dependencies>
diff --git a/eip-splitter/pom.xml b/eip-splitter/pom.xml
index d5aab1ed2..2bc3eec84 100644
--- a/eip-splitter/pom.xml
+++ b/eip-splitter/pom.xml
@@ -26,7 +26,7 @@
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     <dependencies>
diff --git a/eip-wire-tap/pom.xml b/eip-wire-tap/pom.xml
index a2b3aee8f..efca8d3c4 100644
--- a/eip-wire-tap/pom.xml
+++ b/eip-wire-tap/pom.xml
@@ -26,7 +26,7 @@
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     <dependencies>
diff --git a/event-aggregator/pom.xml b/event-aggregator/pom.xml
index 4ede7e366..2e9f4d9a9 100644
--- a/event-aggregator/pom.xml
+++ b/event-aggregator/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	<artifactId>event-aggregator</artifactId>
 	<dependencies>
diff --git a/event-asynchronous/pom.xml b/event-asynchronous/pom.xml
index 647296d0d..5efa0252f 100644
--- a/event-asynchronous/pom.xml
+++ b/event-asynchronous/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
+    <version>1.22.0-SNAPSHOT</version>
   </parent>
   <artifactId>event-asynchronous</artifactId>
   <dependencies>
diff --git a/event-driven-architecture/pom.xml b/event-driven-architecture/pom.xml
index dc846f241..778949862 100644
--- a/event-driven-architecture/pom.xml
+++ b/event-driven-architecture/pom.xml
@@ -31,7 +31,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.21.0</version>
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     </parent>
 
     <artifactId>event-driven-architecture</artifactId>
diff --git a/event-queue/pom.xml b/event-queue/pom.xml
index 2d341e7eb..dd08a6ae7 100644
--- a/event-queue/pom.xml
+++ b/event-queue/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>event-queue</artifactId>
   <dependencies>
diff --git a/event-sourcing/pom.xml b/event-sourcing/pom.xml
index 8242cb502..c97921a1c 100644
--- a/event-sourcing/pom.xml
+++ b/event-sourcing/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>event-sourcing</artifactId>
   <dependencies>
diff --git a/execute-around/pom.xml b/execute-around/pom.xml
index 50b5672d4..ac56665fd 100644
--- a/execute-around/pom.xml
+++ b/execute-around/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>execute-around</artifactId>
   <dependencies>
diff --git a/extension-objects/pom.xml b/extension-objects/pom.xml
index 340e59c44..37322cc01 100644
--- a/extension-objects/pom.xml
+++ b/extension-objects/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.21.0</version>
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   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/facade/pom.xml b/facade/pom.xml
index c608bfe46..4a8b3e412 100644
--- a/facade/pom.xml
+++ b/facade/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>facade</artifactId>
   <dependencies>
diff --git a/factory-kit/pom.xml b/factory-kit/pom.xml
index 9a4d9eae8..54554a354 100644
--- a/factory-kit/pom.xml
+++ b/factory-kit/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.21.0</version>
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     </parent>
     <artifactId>factory-kit</artifactId>
     <dependencies>
diff --git a/factory-method/pom.xml b/factory-method/pom.xml
index 0a18f23a6..cc4d21d1a 100644
--- a/factory-method/pom.xml
+++ b/factory-method/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>factory-method</artifactId>
   <dependencies>
diff --git a/feature-toggle/pom.xml b/feature-toggle/pom.xml
index a9589047a..75da6ec9c 100644
--- a/feature-toggle/pom.xml
+++ b/feature-toggle/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.21.0</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/fluentinterface/pom.xml b/fluentinterface/pom.xml
index 6276ee383..23fc5d806 100644
--- a/fluentinterface/pom.xml
+++ b/fluentinterface/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.21.0</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/flux/pom.xml b/flux/pom.xml
index 9f9c36719..424aaffd2 100644
--- a/flux/pom.xml
+++ b/flux/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>flux</artifactId>
   <dependencies>
diff --git a/flyweight/pom.xml b/flyweight/pom.xml
index 0cd16209f..43b9d3ade 100644
--- a/flyweight/pom.xml
+++ b/flyweight/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>flyweight</artifactId>
   <dependencies>
diff --git a/front-controller/pom.xml b/front-controller/pom.xml
index 395fe55c4..d7c2da36e 100644
--- a/front-controller/pom.xml
+++ b/front-controller/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>front-controller</artifactId>
 	<dependencies>
diff --git a/guarded-suspension/pom.xml b/guarded-suspension/pom.xml
index 3616ecfed..e802eb4bd 100644
--- a/guarded-suspension/pom.xml
+++ b/guarded-suspension/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <packaging>jar</packaging>
   <artifactId>guarded-suspension</artifactId>
diff --git a/half-sync-half-async/pom.xml b/half-sync-half-async/pom.xml
index f6f6b727a..d965298ca 100644
--- a/half-sync-half-async/pom.xml
+++ b/half-sync-half-async/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>half-sync-half-async</artifactId>
   <dependencies>
diff --git a/hexagonal/pom.xml b/hexagonal/pom.xml
index d94f3ec4c..4f56a1020 100644
--- a/hexagonal/pom.xml
+++ b/hexagonal/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>hexagonal</artifactId>
   <dependencies>
diff --git a/intercepting-filter/pom.xml b/intercepting-filter/pom.xml
index 9b318c69c..c4183c7d0 100644
--- a/intercepting-filter/pom.xml
+++ b/intercepting-filter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>intercepting-filter</artifactId>
   <dependencies>
diff --git a/interpreter/pom.xml b/interpreter/pom.xml
index e0fb1df11..aa834b2ed 100644
--- a/interpreter/pom.xml
+++ b/interpreter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>interpreter</artifactId>
   <dependencies>
diff --git a/iterator/pom.xml b/iterator/pom.xml
index 88a626a95..6eafcb92c 100644
--- a/iterator/pom.xml
+++ b/iterator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>iterator</artifactId>
   <dependencies>
diff --git a/layers/pom.xml b/layers/pom.xml
index 362109afb..8237c8f4f 100644
--- a/layers/pom.xml
+++ b/layers/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<groupId>com.iluwatar.layers</groupId>
 	<artifactId>layers</artifactId>
diff --git a/lazy-loading/pom.xml b/lazy-loading/pom.xml
index e2ccf22be..d5dacc7ce 100644
--- a/lazy-loading/pom.xml
+++ b/lazy-loading/pom.xml
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>lazy-loading</artifactId>
   <dependencies>
diff --git a/marker/pom.xml b/marker/pom.xml
index dabb13ece..afa82f4db 100644
--- a/marker/pom.xml
+++ b/marker/pom.xml
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     <groupId>com.iluwatar</groupId>
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   <modelVersion>4.0.0</modelVersion>
 
diff --git a/master-worker-pattern/pom.xml b/master-worker-pattern/pom.xml
index fdc0d4e91..be512fdef 100644
--- a/master-worker-pattern/pom.xml
+++ b/master-worker-pattern/pom.xml
@@ -27,7 +27,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   <artifactId>master-worker-pattern</artifactId>
   <dependencies>
diff --git a/mediator/pom.xml b/mediator/pom.xml
index 804f80ece..14aadac8d 100644
--- a/mediator/pom.xml
+++ b/mediator/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>mediator</artifactId>
   <dependencies>
diff --git a/memento/pom.xml b/memento/pom.xml
index b48d66c4a..7eadc5839 100644
--- a/memento/pom.xml
+++ b/memento/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>memento</artifactId>
   <dependencies>
diff --git a/model-view-controller/pom.xml b/model-view-controller/pom.xml
index 8bd3b5a53..64cb39f47 100644
--- a/model-view-controller/pom.xml
+++ b/model-view-controller/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>model-view-controller</artifactId>
   <dependencies>
diff --git a/model-view-presenter/pom.xml b/model-view-presenter/pom.xml
index 54616e2db..2be7b30ca 100644
--- a/model-view-presenter/pom.xml
+++ b/model-view-presenter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   <artifactId>model-view-presenter</artifactId>
   <name>model-view-presenter</name>
diff --git a/module/pom.xml b/module/pom.xml
index facf36cc8..df8c14942 100644
--- a/module/pom.xml
+++ b/module/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<artifactId>module</artifactId>
 	<dependencies>
diff --git a/monad/pom.xml b/monad/pom.xml
index ed29eebe2..d9a436a6b 100644
--- a/monad/pom.xml
+++ b/monad/pom.xml
@@ -29,7 +29,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
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     <artifactId>monad</artifactId>
     <dependencies>
diff --git a/monostate/pom.xml b/monostate/pom.xml
index 09a43f5bf..018e35248 100644
--- a/monostate/pom.xml
+++ b/monostate/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>monostate</artifactId>
   <dependencies>
diff --git a/multiton/pom.xml b/multiton/pom.xml
index 8c3f1badb..df26fe204 100644
--- a/multiton/pom.xml
+++ b/multiton/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>multiton</artifactId>
   <dependencies>
diff --git a/mute-idiom/pom.xml b/mute-idiom/pom.xml
index 7d91bbe17..271e52658 100644
--- a/mute-idiom/pom.xml
+++ b/mute-idiom/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>mute-idiom</artifactId>
 	<dependencies>
diff --git a/mutex/pom.xml b/mutex/pom.xml
index 37188c213..2075fb4a2 100644
--- a/mutex/pom.xml
+++ b/mutex/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>mutex</artifactId>
   <dependencies>
diff --git a/naked-objects/dom/pom.xml b/naked-objects/dom/pom.xml
index c8029784e..69365bd4b 100644
--- a/naked-objects/dom/pom.xml
+++ b/naked-objects/dom/pom.xml
@@ -16,7 +16,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>naked-objects</artifactId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-dom</artifactId>
diff --git a/naked-objects/fixture/pom.xml b/naked-objects/fixture/pom.xml
index c4d1f48bc..6426eb1d6 100644
--- a/naked-objects/fixture/pom.xml
+++ b/naked-objects/fixture/pom.xml
@@ -16,7 +16,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>naked-objects</artifactId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-fixture</artifactId>
diff --git a/naked-objects/integtests/pom.xml b/naked-objects/integtests/pom.xml
index cfe74e43f..c4dd52dcf 100644
--- a/naked-objects/integtests/pom.xml
+++ b/naked-objects/integtests/pom.xml
@@ -16,7 +16,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>naked-objects</artifactId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-integtests</artifactId>
diff --git a/naked-objects/pom.xml b/naked-objects/pom.xml
index 021374a69..8c21504bb 100644
--- a/naked-objects/pom.xml
+++ b/naked-objects/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<artifactId>java-design-patterns</artifactId>
 		<groupId>com.iluwatar</groupId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects</artifactId>
@@ -350,17 +350,17 @@
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-dom</artifactId>
-				<version>1.21.0</version>
+				<version>1.22.0-SNAPSHOT</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-fixture</artifactId>
-				<version>1.21.0</version>
+				<version>1.22.0-SNAPSHOT</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-webapp</artifactId>
-				<version>1.21.0</version>
+				<version>1.22.0-SNAPSHOT</version>
 			</dependency>
 
 		</dependencies>
diff --git a/naked-objects/webapp/pom.xml b/naked-objects/webapp/pom.xml
index fff34db70..e3b8d122a 100644
--- a/naked-objects/webapp/pom.xml
+++ b/naked-objects/webapp/pom.xml
@@ -16,7 +16,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>naked-objects</artifactId>
-		<version>1.21.0</version>
+		<version>1.22.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-webapp</artifactId>
diff --git a/null-object/pom.xml b/null-object/pom.xml
index d5e1930c7..f477b861c 100644
--- a/null-object/pom.xml
+++ b/null-object/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>null-object</artifactId>
   <dependencies>
diff --git a/object-mother/pom.xml b/object-mother/pom.xml
index 1e9b61af1..431d4d3b9 100644
--- a/object-mother/pom.xml
+++ b/object-mother/pom.xml
@@ -30,7 +30,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
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     <artifactId>object-mother</artifactId>
     <dependencies>
diff --git a/object-pool/pom.xml b/object-pool/pom.xml
index a3eb20c74..a9a0fd044 100644
--- a/object-pool/pom.xml
+++ b/object-pool/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
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   <artifactId>object-pool</artifactId>
   <dependencies>
diff --git a/observer/pom.xml b/observer/pom.xml
index 0d1c18300..dbe40f22f 100644
--- a/observer/pom.xml
+++ b/observer/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>observer</artifactId>
   <dependencies>
diff --git a/page-object/pom.xml b/page-object/pom.xml
index 169b9512e..93bf25fc9 100644
--- a/page-object/pom.xml
+++ b/page-object/pom.xml
@@ -29,7 +29,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
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     <artifactId>page-object</artifactId>
     <packaging>pom</packaging>
diff --git a/page-object/sample-application/pom.xml b/page-object/sample-application/pom.xml
index e18312e15..44bc18a8c 100644
--- a/page-object/sample-application/pom.xml
+++ b/page-object/sample-application/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <artifactId>page-object</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.21.0</version>
+    <version>1.22.0-SNAPSHOT</version>
   </parent>
   <artifactId>sample-application</artifactId>
 </project>
diff --git a/page-object/test-automation/pom.xml b/page-object/test-automation/pom.xml
index dc5a17549..f657a8dab 100644
--- a/page-object/test-automation/pom.xml
+++ b/page-object/test-automation/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <artifactId>page-object</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.21.0</version>
+    <version>1.22.0-SNAPSHOT</version>
   </parent>
   <artifactId>test-automation</artifactId>
   <dependencies>
diff --git a/partial-response/pom.xml b/partial-response/pom.xml
index 1bc6a1b6c..db70ffd1c 100644
--- a/partial-response/pom.xml
+++ b/partial-response/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.21.0</version>
+        <version>1.22.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/poison-pill/pom.xml b/poison-pill/pom.xml
index f701473b3..16ee086c7 100644
--- a/poison-pill/pom.xml
+++ b/poison-pill/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   </parent>
   <artifactId>poison-pill</artifactId>
   <dependencies>
diff --git a/pom.xml b/pom.xml
index e4aeb5253..cb5dbbd1c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
+    <version>1.22.0-SNAPSHOT</version>
     <packaging>pom</packaging>
     <inceptionYear>2014</inceptionYear>
     <properties>
diff --git a/priority-queue/pom.xml b/priority-queue/pom.xml
index 3fb50b574..aaf172ef3 100644
--- a/priority-queue/pom.xml
+++ b/priority-queue/pom.xml
@@ -31,7 +31,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.21.0</version>
+        <version>1.22.0-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/private-class-data/pom.xml b/private-class-data/pom.xml
index fa2e4fc0d..d3ea624a4 100644
--- a/private-class-data/pom.xml
+++ b/private-class-data/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>private-class-data</artifactId>
   <dependencies>
diff --git a/producer-consumer/pom.xml b/producer-consumer/pom.xml
index c09b8e47a..20cc0a192 100644
--- a/producer-consumer/pom.xml
+++ b/producer-consumer/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>producer-consumer</artifactId>
   <dependencies>
diff --git a/promise/pom.xml b/promise/pom.xml
index 89ce50e99..8e7e92ddf 100644
--- a/promise/pom.xml
+++ b/promise/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>promise</artifactId>
   <dependencies>
diff --git a/property/pom.xml b/property/pom.xml
index 68da0c2f5..d17aff705 100644
--- a/property/pom.xml
+++ b/property/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
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   <artifactId>property</artifactId>
   <dependencies>
diff --git a/prototype/pom.xml b/prototype/pom.xml
index ab5fa9373..12416f41d 100644
--- a/prototype/pom.xml
+++ b/prototype/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>prototype</artifactId>
   <dependencies>
diff --git a/proxy/pom.xml b/proxy/pom.xml
index 98449c48f..e6b3ec76f 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>proxy</artifactId>
   <dependencies>
diff --git a/queue-load-leveling/pom.xml b/queue-load-leveling/pom.xml
index 0dcf4770e..bba4c44df 100644
--- a/queue-load-leveling/pom.xml
+++ b/queue-load-leveling/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>queue-load-leveling</artifactId>
   <dependencies>
diff --git a/reactor/pom.xml b/reactor/pom.xml
index beebf7b83..ff28b19ad 100644
--- a/reactor/pom.xml
+++ b/reactor/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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   <artifactId>reactor</artifactId>
   <dependencies>
diff --git a/reader-writer-lock/pom.xml b/reader-writer-lock/pom.xml
index f7154a525..4a69cdb0c 100644
--- a/reader-writer-lock/pom.xml
+++ b/reader-writer-lock/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.21.0</version>
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     <artifactId>reader-writer-lock</artifactId>
     <dependencies>
diff --git a/repository/pom.xml b/repository/pom.xml
index be05c8272..48bca0cf2 100644
--- a/repository/pom.xml
+++ b/repository/pom.xml
@@ -29,7 +29,7 @@
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         <artifactId>java-design-patterns</artifactId>
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     <artifactId>repository</artifactId>
     <dependencies>
diff --git a/resource-acquisition-is-initialization/pom.xml b/resource-acquisition-is-initialization/pom.xml
index cd311e4e1..fc91d5c04 100644
--- a/resource-acquisition-is-initialization/pom.xml
+++ b/resource-acquisition-is-initialization/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>resource-acquisition-is-initialization</artifactId>
   <dependencies>
diff --git a/retry/pom.xml b/retry/pom.xml
index d4d906e49..5d054183f 100644
--- a/retry/pom.xml
+++ b/retry/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.21.0</version>
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     <artifactId>retry</artifactId>
     <packaging>jar</packaging>
diff --git a/semaphore/pom.xml b/semaphore/pom.xml
index 49363925f..3761e5e49 100644
--- a/semaphore/pom.xml
+++ b/semaphore/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>semaphore</artifactId>
   <dependencies>
diff --git a/servant/pom.xml b/servant/pom.xml
index 60be0dd76..1ee17aa9c 100644
--- a/servant/pom.xml
+++ b/servant/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>servant</artifactId>
   <dependencies>
diff --git a/serverless/pom.xml b/serverless/pom.xml
index 92b525b65..6156b41af 100644
--- a/serverless/pom.xml
+++ b/serverless/pom.xml
@@ -26,7 +26,7 @@
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         <artifactId>java-design-patterns</artifactId>
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     <dependencies>
diff --git a/service-layer/pom.xml b/service-layer/pom.xml
index 942cc8519..403a896a4 100644
--- a/service-layer/pom.xml
+++ b/service-layer/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>service-layer</artifactId>
   <dependencies>
diff --git a/service-locator/pom.xml b/service-locator/pom.xml
index 31f247ac5..948997f7a 100644
--- a/service-locator/pom.xml
+++ b/service-locator/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>service-locator</artifactId>
   <dependencies>
diff --git a/singleton/pom.xml b/singleton/pom.xml
index a142faec0..e518665d3 100644
--- a/singleton/pom.xml
+++ b/singleton/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>singleton</artifactId>
   <dependencies>
diff --git a/spatial-partition/pom.xml b/spatial-partition/pom.xml
index d0227f227..0ad207211 100644
--- a/spatial-partition/pom.xml
+++ b/spatial-partition/pom.xml
@@ -46,7 +46,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>spatial-partition</artifactId>
   <dependencies>
diff --git a/specification/pom.xml b/specification/pom.xml
index 26cce7765..38adf9b6f 100644
--- a/specification/pom.xml
+++ b/specification/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>specification</artifactId>
   <dependencies>
diff --git a/state/pom.xml b/state/pom.xml
index a3499e5bf..f90da8786 100644
--- a/state/pom.xml
+++ b/state/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>state</artifactId>
   <dependencies>
diff --git a/step-builder/pom.xml b/step-builder/pom.xml
index d11312def..6021ecb2a 100644
--- a/step-builder/pom.xml
+++ b/step-builder/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
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   <artifactId>step-builder</artifactId>
   <dependencies>
diff --git a/strategy/pom.xml b/strategy/pom.xml
index 6d93322a1..c421436f5 100644
--- a/strategy/pom.xml
+++ b/strategy/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>strategy</artifactId>
   <dependencies>
diff --git a/template-method/pom.xml b/template-method/pom.xml
index 915e48f2f..e1f24ae25 100644
--- a/template-method/pom.xml
+++ b/template-method/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>template-method</artifactId>
   <dependencies>
diff --git a/thread-pool/pom.xml b/thread-pool/pom.xml
index 7d9263312..f05f6c219 100644
--- a/thread-pool/pom.xml
+++ b/thread-pool/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>thread-pool</artifactId>
   <dependencies>
diff --git a/throttling/pom.xml b/throttling/pom.xml
index 518b610e0..e21d8b3c1 100644
--- a/throttling/pom.xml
+++ b/throttling/pom.xml
@@ -29,7 +29,7 @@
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         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/tls/pom.xml b/tls/pom.xml
index 81c53be5d..596ebd373 100644
--- a/tls/pom.xml
+++ b/tls/pom.xml
@@ -30,7 +30,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>tls</artifactId>
   <dependencies>
diff --git a/tolerant-reader/pom.xml b/tolerant-reader/pom.xml
index 1ccd55ca4..abf786059 100644
--- a/tolerant-reader/pom.xml
+++ b/tolerant-reader/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>tolerant-reader</artifactId>
   <dependencies>
diff --git a/trampoline/pom.xml b/trampoline/pom.xml
index f7a95a54b..e6f2e620a 100644
--- a/trampoline/pom.xml
+++ b/trampoline/pom.xml
@@ -30,7 +30,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.21.0</version>
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     </parent>
     <artifactId>trampoline</artifactId>
diff --git a/twin/pom.xml b/twin/pom.xml
index fae948958..15b4f6c11 100644
--- a/twin/pom.xml
+++ b/twin/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>twin</artifactId>
   <dependencies>
diff --git a/typeobjectpattern/pom.xml b/typeobjectpattern/pom.xml
index a1546de05..f07460f49 100644
--- a/typeobjectpattern/pom.xml
+++ b/typeobjectpattern/pom.xml
@@ -27,7 +27,7 @@
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   <artifactId>typeobjectpattern</artifactId>
   <dependencies>
diff --git a/unit-of-work/pom.xml b/unit-of-work/pom.xml
index 5fb8e9796..fc11432e2 100644
--- a/unit-of-work/pom.xml
+++ b/unit-of-work/pom.xml
@@ -29,7 +29,7 @@
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/value-object/pom.xml b/value-object/pom.xml
index 3f31c8461..669ea521e 100644
--- a/value-object/pom.xml
+++ b/value-object/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.21.0</version>
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 	</parent>
 	<artifactId>value-object</artifactId>
 	<dependencies>
diff --git a/visitor/pom.xml b/visitor/pom.xml
index f159a28c0..5fbc84142 100644
--- a/visitor/pom.xml
+++ b/visitor/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
-    <version>1.21.0</version>
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