diff --git a/abstract-document/pom.xml b/abstract-document/pom.xml
index d1b10a9fd..0117794ea 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>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <artifactId>abstract-document</artifactId>
     <dependencies>
diff --git a/abstract-factory/pom.xml b/abstract-factory/pom.xml
index 6d94e70ce..2b5c346a7 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>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>abstract-factory</artifactId>
   <dependencies>
diff --git a/acyclic-visitor/pom.xml b/acyclic-visitor/pom.xml
index 4cb1ccaff..1dd4e20a1 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	
 	<artifactId>acyclic-visitor</artifactId>
diff --git a/adapter/pom.xml b/adapter/pom.xml
index 95ccee3a9..7c9cb213c 100644
--- a/adapter/pom.xml
+++ b/adapter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</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 fb26ff954..894ee4b0c 100644
--- a/aggregator-microservices/aggregator-service/pom.xml
+++ b/aggregator-microservices/aggregator-service/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>aggregator-microservices</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/aggregator-microservices/information-microservice/pom.xml b/aggregator-microservices/information-microservice/pom.xml
index 7afce1e9b..9b21a5778 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>1.20.0-SNAPSHOT</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 0d44b037e..946f63c74 100644
--- a/aggregator-microservices/inventory-microservice/pom.xml
+++ b/aggregator-microservices/inventory-microservice/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>aggregator-microservices</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.20.0-SNAPSHOT</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/aggregator-microservices/pom.xml b/aggregator-microservices/pom.xml
index ed48768f2..9b8cc1ed6 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>
-        <version>1.20.0-SNAPSHOT</version>
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     <artifactId>aggregator-microservices</artifactId>
diff --git a/ambassador/pom.xml b/ambassador/pom.xml
index f47b76f9a..f7ff1ca4d 100644
--- a/ambassador/pom.xml
+++ b/ambassador/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.20.0-SNAPSHOT</version>
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diff --git a/api-gateway/api-gateway-service/pom.xml b/api-gateway/api-gateway-service/pom.xml
index 609fca88d..bf8e7f203 100644
--- a/api-gateway/api-gateway-service/pom.xml
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     <groupId>com.iluwatar</groupId>
-    <version>1.20.0-SNAPSHOT</version>
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   <modelVersion>4.0.0</modelVersion>
   <artifactId>api-gateway-service</artifactId>
diff --git a/api-gateway/image-microservice/pom.xml b/api-gateway/image-microservice/pom.xml
index e90747eb9..e421a1999 100644
--- a/api-gateway/image-microservice/pom.xml
+++ b/api-gateway/image-microservice/pom.xml
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   <parent>
     <artifactId>api-gateway</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.20.0-SNAPSHOT</version>
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   <modelVersion>4.0.0</modelVersion>
diff --git a/api-gateway/pom.xml b/api-gateway/pom.xml
index 72468c7eb..60700571c 100644
--- a/api-gateway/pom.xml
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   <parent>
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     <groupId>com.iluwatar</groupId>
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   <modelVersion>4.0.0</modelVersion>
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diff --git a/api-gateway/price-microservice/pom.xml b/api-gateway/price-microservice/pom.xml
index deb0627f4..21f69260a 100644
--- a/api-gateway/price-microservice/pom.xml
+++ b/api-gateway/price-microservice/pom.xml
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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 c29062630..2da01240f 100644
--- a/async-method-invocation/pom.xml
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>async-method-invocation</artifactId>
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diff --git a/balking/pom.xml b/balking/pom.xml
index e16065359..dbd916dbb 100644
--- a/balking/pom.xml
+++ b/balking/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/bridge/pom.xml b/bridge/pom.xml
index 8ab24c159..380995660 100644
--- a/bridge/pom.xml
+++ b/bridge/pom.xml
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>bridge</artifactId>
   <dependencies>
diff --git a/builder/pom.xml b/builder/pom.xml
index b17d53030..05e9dbfbc 100644
--- a/builder/pom.xml
+++ b/builder/pom.xml
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>builder</artifactId>
   <dependencies>
diff --git a/business-delegate/pom.xml b/business-delegate/pom.xml
index d48faeff4..3e98e05d9 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>1.20.0-SNAPSHOT</version>
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 	</parent>
 	<artifactId>business-delegate</artifactId>
 	<dependencies>
diff --git a/caching/pom.xml b/caching/pom.xml
index 57f8f0119..ffa7513ab 100644
--- a/caching/pom.xml
+++ b/caching/pom.xml
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>caching</artifactId>
   <dependencies>
diff --git a/callback/pom.xml b/callback/pom.xml
index 387c8a667..0e8831f89 100644
--- a/callback/pom.xml
+++ b/callback/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>callback</artifactId>
   <dependencies>
diff --git a/chain/pom.xml b/chain/pom.xml
index 07b1a5e4a..798c9a634 100644
--- a/chain/pom.xml
+++ b/chain/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>chain</artifactId>
   <dependencies>
diff --git a/collection-pipeline/pom.xml b/collection-pipeline/pom.xml
index a663fb35a..77ae4997e 100644
--- a/collection-pipeline/pom.xml
+++ b/collection-pipeline/pom.xml
@@ -27,7 +27,7 @@
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     <groupId>com.iluwatar</groupId>
     <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 68d4b2064..e73d62ae9 100644
--- a/command/pom.xml
+++ b/command/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>command</artifactId>
   <dependencies>
diff --git a/composite/pom.xml b/composite/pom.xml
index 944aa1456..d342506cb 100644
--- a/composite/pom.xml
+++ b/composite/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>composite</artifactId>
   <dependencies>
diff --git a/converter/pom.xml b/converter/pom.xml
index f696048f5..b0d6a20c7 100644
--- a/converter/pom.xml
+++ b/converter/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.20.0-SNAPSHOT</version>
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     </parent>
     <modelVersion>4.0.0</modelVersion>
     <dependencies>
diff --git a/cqrs/pom.xml b/cqrs/pom.xml
index 7ed2e1208..4307265b6 100644
--- a/cqrs/pom.xml
+++ b/cqrs/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>cqrs</artifactId>
 	<dependencies>
diff --git a/dao/pom.xml b/dao/pom.xml
index 3700d76a7..4ae792658 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>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>dao</artifactId>
 
diff --git a/data-bus/pom.xml b/data-bus/pom.xml
index 6292b71fb..a62ea2313 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 aadcabd3d..38e8a1fb4 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>data-mapper</artifactId>
 	<dependencies>
diff --git a/data-transfer-object/pom.xml b/data-transfer-object/pom.xml
index 17ad1f83f..c5ee47456 100644
--- a/data-transfer-object/pom.xml
+++ b/data-transfer-object/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
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     <artifactId>data-transfer-object</artifactId>
     <dependencies>
diff --git a/decorator/pom.xml b/decorator/pom.xml
index d4e2a887d..6a73a27ce 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 6c7c710d5..1768fd13f 100644
--- a/delegation/pom.xml
+++ b/delegation/pom.xml
@@ -30,7 +30,7 @@
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         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
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     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dependency-injection/pom.xml b/dependency-injection/pom.xml
index e8a499918..d81a651e2 100644
--- a/dependency-injection/pom.xml
+++ b/dependency-injection/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <dependencies>
diff --git a/dirty-flag/pom.xml b/dirty-flag/pom.xml
index 76628a6be..530c65dbf 100644
--- a/dirty-flag/pom.xml
+++ b/dirty-flag/pom.xml
@@ -29,11 +29,11 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <groupId>com.iluwatar</groupId>
   <artifactId>dirty-flag</artifactId>
-  <version>1.20.0-SNAPSHOT</version>
+  <version>1.20.0</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 7efd3c31e..17bedb916 100644
--- a/double-checked-locking/pom.xml
+++ b/double-checked-locking/pom.xml
@@ -27,7 +27,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>double-checked-locking</artifactId>
   <dependencies>
diff --git a/double-dispatch/pom.xml b/double-dispatch/pom.xml
index c64ab4ce9..375d2a3ad 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 3b043ad7e..5e91e75f7 100644
--- a/eip-aggregator/pom.xml
+++ b/eip-aggregator/pom.xml
@@ -26,7 +26,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
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     <dependencies>
diff --git a/eip-message-channel/pom.xml b/eip-message-channel/pom.xml
index 84cde7e2e..33c11eba3 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>eip-message-channel</artifactId>
 	<dependencies>
diff --git a/eip-publish-subscribe/pom.xml b/eip-publish-subscribe/pom.xml
index 82763b22b..1a1a826d6 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>eip-publish-subscribe</artifactId>
 	<dependencies>
diff --git a/eip-splitter/pom.xml b/eip-splitter/pom.xml
index ed16337da..d3467185d 100644
--- a/eip-splitter/pom.xml
+++ b/eip-splitter/pom.xml
@@ -26,7 +26,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
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     <dependencies>
diff --git a/eip-wire-tap/pom.xml b/eip-wire-tap/pom.xml
index 752d43077..497340a79 100644
--- a/eip-wire-tap/pom.xml
+++ b/eip-wire-tap/pom.xml
@@ -26,7 +26,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
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     <dependencies>
diff --git a/event-aggregator/pom.xml b/event-aggregator/pom.xml
index a39738bf8..41b9bdd09 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>event-aggregator</artifactId>
 	<dependencies>
diff --git a/event-asynchronous/pom.xml b/event-asynchronous/pom.xml
index 9398d25ce..36617cb8a 100644
--- a/event-asynchronous/pom.xml
+++ b/event-asynchronous/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   <artifactId>event-asynchronous</artifactId>
   <dependencies>
diff --git a/event-driven-architecture/pom.xml b/event-driven-architecture/pom.xml
index 87aae0070..99515f876 100644
--- a/event-driven-architecture/pom.xml
+++ b/event-driven-architecture/pom.xml
@@ -31,7 +31,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
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     <artifactId>event-driven-architecture</artifactId>
diff --git a/event-queue/pom.xml b/event-queue/pom.xml
index a0c1913a7..dad2df79a 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>event-queue</artifactId>
   <dependencies>
diff --git a/event-sourcing/pom.xml b/event-sourcing/pom.xml
index 785d72c68..07fba6d50 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>event-sourcing</artifactId>
   <dependencies>
diff --git a/execute-around/pom.xml b/execute-around/pom.xml
index 358f4eae4..797d3f573 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>execute-around</artifactId>
   <dependencies>
diff --git a/extension-objects/pom.xml b/extension-objects/pom.xml
index 74f233775..7ef6035d2 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/facade/pom.xml b/facade/pom.xml
index d0c459428..be831c4eb 100644
--- a/facade/pom.xml
+++ b/facade/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>facade</artifactId>
   <dependencies>
diff --git a/factory-kit/pom.xml b/factory-kit/pom.xml
index 1c8f4248e..e15d0956f 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>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <artifactId>factory-kit</artifactId>
     <dependencies>
diff --git a/factory-method/pom.xml b/factory-method/pom.xml
index 124b1a73c..2980a7991 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>factory-method</artifactId>
   <dependencies>
diff --git a/feature-toggle/pom.xml b/feature-toggle/pom.xml
index 3c6c7af94..07559b008 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>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/fluentinterface/pom.xml b/fluentinterface/pom.xml
index a91832786..cf0d07b01 100644
--- a/fluentinterface/pom.xml
+++ b/fluentinterface/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/flux/pom.xml b/flux/pom.xml
index 59d105b39..06b16e4cd 100644
--- a/flux/pom.xml
+++ b/flux/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>flux</artifactId>
   <dependencies>
diff --git a/flyweight/pom.xml b/flyweight/pom.xml
index adf675b57..1dd43d51e 100644
--- a/flyweight/pom.xml
+++ b/flyweight/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>flyweight</artifactId>
   <dependencies>
diff --git a/front-controller/pom.xml b/front-controller/pom.xml
index b76852e02..4f8801f0c 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>front-controller</artifactId>
 	<dependencies>
diff --git a/guarded-suspension/pom.xml b/guarded-suspension/pom.xml
index 6b8b977eb..9b744978e 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </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 e6df33018..0cd0e9f41 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>half-sync-half-async</artifactId>
   <dependencies>
diff --git a/hexagonal/pom.xml b/hexagonal/pom.xml
index e6084ac70..77a1edc30 100644
--- a/hexagonal/pom.xml
+++ b/hexagonal/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>hexagonal</artifactId>
   <dependencies>
diff --git a/intercepting-filter/pom.xml b/intercepting-filter/pom.xml
index 658dba671..3d494802d 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>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>intercepting-filter</artifactId>
   <dependencies>
diff --git a/interpreter/pom.xml b/interpreter/pom.xml
index 1e61dfb48..573aad896 100644
--- a/interpreter/pom.xml
+++ b/interpreter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>interpreter</artifactId>
   <dependencies>
diff --git a/iterator/pom.xml b/iterator/pom.xml
index 6581b8224..e9037fae6 100644
--- a/iterator/pom.xml
+++ b/iterator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>iterator</artifactId>
   <dependencies>
diff --git a/layers/pom.xml b/layers/pom.xml
index 9ca1c58e7..bc566b5e3 100644
--- a/layers/pom.xml
+++ b/layers/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<groupId>com.iluwatar.layers</groupId>
 	<artifactId>layers</artifactId>
diff --git a/lazy-loading/pom.xml b/lazy-loading/pom.xml
index 6664ddcc7..96a0a53d4 100644
--- a/lazy-loading/pom.xml
+++ b/lazy-loading/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>lazy-loading</artifactId>
   <dependencies>
diff --git a/marker/pom.xml b/marker/pom.xml
index 138ab0c30..92d89574e 100644
--- a/marker/pom.xml
+++ b/marker/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/mediator/pom.xml b/mediator/pom.xml
index 77c29adda..a97002fd1 100644
--- a/mediator/pom.xml
+++ b/mediator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>mediator</artifactId>
   <dependencies>
diff --git a/memento/pom.xml b/memento/pom.xml
index ad4a55236..620f93607 100644
--- a/memento/pom.xml
+++ b/memento/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>memento</artifactId>
   <dependencies>
diff --git a/model-view-controller/pom.xml b/model-view-controller/pom.xml
index 89f7bd825..9186820b6 100644
--- a/model-view-controller/pom.xml
+++ b/model-view-controller/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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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 d4db8a633..45e576171 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>model-view-presenter</artifactId>
   <name>model-view-presenter</name>
diff --git a/module/pom.xml b/module/pom.xml
index 1b1ecb6af..235fef166 100644
--- a/module/pom.xml
+++ b/module/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>module</artifactId>
 	<dependencies>
diff --git a/monad/pom.xml b/monad/pom.xml
index 947259602..0e335f360 100644
--- a/monad/pom.xml
+++ b/monad/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
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     </parent>
     <artifactId>monad</artifactId>
     <dependencies>
diff --git a/monostate/pom.xml b/monostate/pom.xml
index 94935cbf0..e6fcbcec2 100644
--- a/monostate/pom.xml
+++ b/monostate/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>monostate</artifactId>
   <dependencies>
diff --git a/multiton/pom.xml b/multiton/pom.xml
index cc5103e74..3ab7ffcb0 100644
--- a/multiton/pom.xml
+++ b/multiton/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>multiton</artifactId>
   <dependencies>
diff --git a/mute-idiom/pom.xml b/mute-idiom/pom.xml
index ec2935e3c..26a2b0275 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 	<artifactId>mute-idiom</artifactId>
 	<dependencies>
diff --git a/mutex/pom.xml b/mutex/pom.xml
index 84a8f58b6..369ed88b7 100644
--- a/mutex/pom.xml
+++ b/mutex/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>mutex</artifactId>
   <dependencies>
diff --git a/naked-objects/dom/pom.xml b/naked-objects/dom/pom.xml
index 9be69d7b2..8a7d420d0 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 
 	<artifactId>naked-objects-dom</artifactId>
diff --git a/naked-objects/fixture/pom.xml b/naked-objects/fixture/pom.xml
index ff15d19d8..246506ab8 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 
 	<artifactId>naked-objects-fixture</artifactId>
diff --git a/naked-objects/integtests/pom.xml b/naked-objects/integtests/pom.xml
index 20cb9868d..5e1aa4e00 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 
 	<artifactId>naked-objects-integtests</artifactId>
diff --git a/naked-objects/pom.xml b/naked-objects/pom.xml
index 1672bd579..2f4fd0212 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 
 	<artifactId>naked-objects</artifactId>
@@ -350,17 +350,17 @@
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-dom</artifactId>
-				<version>1.20.0-SNAPSHOT</version>
+				<version>1.20.0</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-fixture</artifactId>
-				<version>1.20.0-SNAPSHOT</version>
+				<version>1.20.0</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-webapp</artifactId>
-				<version>1.20.0-SNAPSHOT</version>
+				<version>1.20.0</version>
 			</dependency>
 
 		</dependencies>
diff --git a/naked-objects/webapp/pom.xml b/naked-objects/webapp/pom.xml
index 6bc7184b9..9c00ac1e9 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>1.20.0-SNAPSHOT</version>
+		<version>1.20.0</version>
 	</parent>
 
 	<artifactId>naked-objects-webapp</artifactId>
diff --git a/null-object/pom.xml b/null-object/pom.xml
index b471b86d4..e212ded5e 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>null-object</artifactId>
   <dependencies>
diff --git a/object-mother/pom.xml b/object-mother/pom.xml
index d59799e0c..2c56d1c3d 100644
--- a/object-mother/pom.xml
+++ b/object-mother/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <artifactId>object-mother</artifactId>
     <dependencies>
diff --git a/object-pool/pom.xml b/object-pool/pom.xml
index 75fa63163..ca04b1175 100644
--- a/object-pool/pom.xml
+++ b/object-pool/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>object-pool</artifactId>
   <dependencies>
diff --git a/observer/pom.xml b/observer/pom.xml
index 3843c60c8..33564578f 100644
--- a/observer/pom.xml
+++ b/observer/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
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   </parent>
   <artifactId>observer</artifactId>
   <dependencies>
diff --git a/page-object/pom.xml b/page-object/pom.xml
index f14050849..169394677 100644
--- a/page-object/pom.xml
+++ b/page-object/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <artifactId>page-object</artifactId>
     <dependencies>
diff --git a/partial-response/pom.xml b/partial-response/pom.xml
index afe04012b..1e4501457 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>1.20.0-SNAPSHOT</version>
+        <version>1.20.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/poison-pill/pom.xml b/poison-pill/pom.xml
index 2ae5c7b31..52b75137a 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>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
   </parent>
   <artifactId>poison-pill</artifactId>
   <dependencies>
diff --git a/pom.xml b/pom.xml
index 322aadb8b..bdead5e09 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.20.0-SNAPSHOT</version>
+    <version>1.20.0</version>
     <packaging>pom</packaging>
     <inceptionYear>2014</inceptionYear>
     <properties>
diff --git a/private-class-data/pom.xml b/private-class-data/pom.xml
index 570b01935..13e18be4b 100644
--- a/private-class-data/pom.xml
+++ b/private-class-data/pom.xml
@@ -29,7 +29,7 @@
   <parent>
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     <artifactId>java-design-patterns</artifactId>
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diff --git a/producer-consumer/pom.xml b/producer-consumer/pom.xml
index 9ef208f99..d57a195f7 100644
--- a/producer-consumer/pom.xml
+++ b/producer-consumer/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>producer-consumer</artifactId>
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diff --git a/promise/pom.xml b/promise/pom.xml
index 4ae5566b2..0dfa70528 100644
--- a/promise/pom.xml
+++ b/promise/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>promise</artifactId>
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diff --git a/property/pom.xml b/property/pom.xml
index d07153e32..c0ffeee57 100644
--- a/property/pom.xml
+++ b/property/pom.xml
@@ -29,7 +29,7 @@
   <parent>
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>property</artifactId>
   <dependencies>
diff --git a/prototype/pom.xml b/prototype/pom.xml
index 9674eabb0..4ab88c48c 100644
--- a/prototype/pom.xml
+++ b/prototype/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>prototype</artifactId>
   <dependencies>
diff --git a/proxy/pom.xml b/proxy/pom.xml
index 600285dd1..fced661a3 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>proxy</artifactId>
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diff --git a/queue-load-leveling/pom.xml b/queue-load-leveling/pom.xml
index 11d178dca..7e5215b39 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 f05edc244..45ee5ab20 100644
--- a/reactor/pom.xml
+++ b/reactor/pom.xml
@@ -29,7 +29,7 @@
   <parent>
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>reactor</artifactId>
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diff --git a/reader-writer-lock/pom.xml b/reader-writer-lock/pom.xml
index 4114c88d3..f1bf80138 100644
--- a/reader-writer-lock/pom.xml
+++ b/reader-writer-lock/pom.xml
@@ -30,7 +30,7 @@
     <parent>
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         <artifactId>java-design-patterns</artifactId>
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     <artifactId>reader-writer-lock</artifactId>
     <dependencies>
diff --git a/repository/pom.xml b/repository/pom.xml
index 02761f524..a74ddb628 100644
--- a/repository/pom.xml
+++ b/repository/pom.xml
@@ -29,7 +29,7 @@
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         <artifactId>java-design-patterns</artifactId>
-        <version>1.20.0-SNAPSHOT</version>
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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 c69db9500..c92bd402a 100644
--- a/resource-acquisition-is-initialization/pom.xml
+++ b/resource-acquisition-is-initialization/pom.xml
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   <parent>
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   <artifactId>resource-acquisition-is-initialization</artifactId>
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diff --git a/retry/pom.xml b/retry/pom.xml
index 9999e0c3b..6db6e014e 100644
--- a/retry/pom.xml
+++ b/retry/pom.xml
@@ -26,7 +26,7 @@
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     <artifactId>retry</artifactId>
     <packaging>jar</packaging>
diff --git a/semaphore/pom.xml b/semaphore/pom.xml
index fc4a6e362..0016ac3d3 100644
--- a/semaphore/pom.xml
+++ b/semaphore/pom.xml
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   <artifactId>semaphore</artifactId>
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diff --git a/servant/pom.xml b/servant/pom.xml
index d72fde86f..9990f68f6 100644
--- a/servant/pom.xml
+++ b/servant/pom.xml
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   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>servant</artifactId>
   <dependencies>
diff --git a/serverless/pom.xml b/serverless/pom.xml
index cfaf6f23c..e6df07d5d 100644
--- a/serverless/pom.xml
+++ b/serverless/pom.xml
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     <dependencies>
diff --git a/service-layer/pom.xml b/service-layer/pom.xml
index 940629be5..a9df0d349 100644
--- a/service-layer/pom.xml
+++ b/service-layer/pom.xml
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diff --git a/service-locator/pom.xml b/service-locator/pom.xml
index f78436585..c8a35e04e 100644
--- a/service-locator/pom.xml
+++ b/service-locator/pom.xml
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diff --git a/singleton/pom.xml b/singleton/pom.xml
index 2f8a55265..8033e090d 100644
--- a/singleton/pom.xml
+++ b/singleton/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>singleton</artifactId>
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diff --git a/specification/pom.xml b/specification/pom.xml
index ddd9ebde4..72f499063 100644
--- a/specification/pom.xml
+++ b/specification/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>specification</artifactId>
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diff --git a/state/pom.xml b/state/pom.xml
index fee910c55..ea681b598 100644
--- a/state/pom.xml
+++ b/state/pom.xml
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   <artifactId>state</artifactId>
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diff --git a/step-builder/pom.xml b/step-builder/pom.xml
index 0a5d1a560..153d426ed 100644
--- a/step-builder/pom.xml
+++ b/step-builder/pom.xml
@@ -30,7 +30,7 @@
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diff --git a/strategy/pom.xml b/strategy/pom.xml
index 1ca63da0b..4e66a4ce7 100644
--- a/strategy/pom.xml
+++ b/strategy/pom.xml
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   <artifactId>strategy</artifactId>
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diff --git a/template-method/pom.xml b/template-method/pom.xml
index 4d0703858..1cf72fc07 100644
--- a/template-method/pom.xml
+++ b/template-method/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>template-method</artifactId>
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diff --git a/thread-pool/pom.xml b/thread-pool/pom.xml
index 517651596..fef009f47 100644
--- a/thread-pool/pom.xml
+++ b/thread-pool/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>thread-pool</artifactId>
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diff --git a/throttling/pom.xml b/throttling/pom.xml
index 1d7677c37..d5009d6e6 100644
--- a/throttling/pom.xml
+++ b/throttling/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/tls/pom.xml b/tls/pom.xml
index 291527967..ead043264 100644
--- a/tls/pom.xml
+++ b/tls/pom.xml
@@ -30,7 +30,7 @@
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     <groupId>com.iluwatar</groupId>
     <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 adbb4d48e..a44e4ff85 100644
--- a/tolerant-reader/pom.xml
+++ b/tolerant-reader/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>tolerant-reader</artifactId>
   <dependencies>
diff --git a/trampoline/pom.xml b/trampoline/pom.xml
index e5d4c25c9..48d27a618 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>1.20.0-SNAPSHOT</version>
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     </parent>
     <artifactId>trampoline</artifactId>
diff --git a/twin/pom.xml b/twin/pom.xml
index bc9d976aa..cb6c26808 100644
--- a/twin/pom.xml
+++ b/twin/pom.xml
@@ -29,7 +29,7 @@
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   <artifactId>twin</artifactId>
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diff --git a/unit-of-work/pom.xml b/unit-of-work/pom.xml
index cd6f10a0c..0d1a1c6ef 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 99ca02195..2cef7d6f2 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>1.20.0-SNAPSHOT</version>
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 	</parent>
 	<artifactId>value-object</artifactId>
 	<dependencies>
diff --git a/visitor/pom.xml b/visitor/pom.xml
index 73c8457ec..fd8b2bf2d 100644
--- a/visitor/pom.xml
+++ b/visitor/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>visitor</artifactId>
   <dependencies>