diff --git a/abstract-document/pom.xml b/abstract-document/pom.xml
index a249f0d07..072ff5432 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>1.19.0-SNAPSHOT</version>
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     </parent>
     <artifactId>abstract-document</artifactId>
     <dependencies>
diff --git a/abstract-factory/pom.xml b/abstract-factory/pom.xml
index 073879acc..13ec80067 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>
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   <artifactId>abstract-factory</artifactId>
   <dependencies>
diff --git a/adapter/pom.xml b/adapter/pom.xml
index 95b9a3e99..32260ba3e 100644
--- a/adapter/pom.xml
+++ b/adapter/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>adapter</artifactId>
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diff --git a/aggregator-microservices/aggregator-service/pom.xml b/aggregator-microservices/aggregator-service/pom.xml
index d338f47b9..a5192047b 100644
--- a/aggregator-microservices/aggregator-service/pom.xml
+++ b/aggregator-microservices/aggregator-service/pom.xml
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         <groupId>com.iluwatar</groupId>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/aggregator-microservices/information-microservice/pom.xml b/aggregator-microservices/information-microservice/pom.xml
index 3879681b7..a3ddb763c 100644
--- a/aggregator-microservices/information-microservice/pom.xml
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diff --git a/aggregator-microservices/inventory-microservice/pom.xml b/aggregator-microservices/inventory-microservice/pom.xml
index 3f212e2e9..e7b4000ab 100644
--- a/aggregator-microservices/inventory-microservice/pom.xml
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diff --git a/aggregator-microservices/pom.xml b/aggregator-microservices/pom.xml
index 364b02566..ffa80e442 100644
--- a/aggregator-microservices/pom.xml
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diff --git a/api-gateway/api-gateway-service/pom.xml b/api-gateway/api-gateway-service/pom.xml
index a035f11a2..d54bdb90c 100644
--- a/api-gateway/api-gateway-service/pom.xml
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diff --git a/api-gateway/image-microservice/pom.xml b/api-gateway/image-microservice/pom.xml
index ad248943d..2feab1060 100644
--- a/api-gateway/image-microservice/pom.xml
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index c151d59a1..e83504d7e 100644
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diff --git a/api-gateway/price-microservice/pom.xml b/api-gateway/price-microservice/pom.xml
index cdd8b4c3c..4dc770340 100644
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   <modelVersion>4.0.0</modelVersion>
diff --git a/async-method-invocation/pom.xml b/async-method-invocation/pom.xml
index a686e3e68..5dc30bfce 100644
--- a/async-method-invocation/pom.xml
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diff --git a/balking/pom.xml b/balking/pom.xml
index 276dc397d..05eac928d 100644
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diff --git a/bridge/pom.xml b/bridge/pom.xml
index 0cef80258..0c1908ba2 100644
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diff --git a/builder/pom.xml b/builder/pom.xml
index a7d5c9d70..578a9f649 100644
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diff --git a/business-delegate/pom.xml b/business-delegate/pom.xml
index 0bc02827b..78c64f472 100644
--- a/business-delegate/pom.xml
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 		<groupId>com.iluwatar</groupId>
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 	<artifactId>business-delegate</artifactId>
 	<dependencies>
diff --git a/caching/pom.xml b/caching/pom.xml
index f76778840..6452f7c76 100644
--- a/caching/pom.xml
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   <artifactId>caching</artifactId>
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diff --git a/callback/pom.xml b/callback/pom.xml
index aa1039789..f35ad9bf5 100644
--- a/callback/pom.xml
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   <artifactId>callback</artifactId>
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diff --git a/chain/pom.xml b/chain/pom.xml
index 51c83f1ae..45f46636e 100644
--- a/chain/pom.xml
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diff --git a/command/pom.xml b/command/pom.xml
index 9a819bb6c..ab0eba18c 100644
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   <artifactId>command</artifactId>
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diff --git a/composite/pom.xml b/composite/pom.xml
index eb3b5d7b4..b72522109 100644
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   <artifactId>composite</artifactId>
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diff --git a/converter/pom.xml b/converter/pom.xml
index 69005d7d6..eff4eab5a 100644
--- a/converter/pom.xml
+++ b/converter/pom.xml
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     <modelVersion>4.0.0</modelVersion>
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diff --git a/cqrs/pom.xml b/cqrs/pom.xml
index 2ed0809f6..b69fa04b3 100644
--- a/cqrs/pom.xml
+++ b/cqrs/pom.xml
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 		<groupId>com.iluwatar</groupId>
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 	<artifactId>cqrs</artifactId>
 	<dependencies>
diff --git a/dao/pom.xml b/dao/pom.xml
index 621af6baf..5d353e039 100644
--- a/dao/pom.xml
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   <artifactId>dao</artifactId>
 
diff --git a/data-bus/pom.xml b/data-bus/pom.xml
index 11d945268..72f99168a 100644
--- a/data-bus/pom.xml
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diff --git a/data-mapper/pom.xml b/data-mapper/pom.xml
index ac0d78c33..07bbb6f8f 100644
--- a/data-mapper/pom.xml
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 		<groupId>com.iluwatar</groupId>
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 	<artifactId>data-mapper</artifactId>
 	<dependencies>
diff --git a/data-transfer-object/pom.xml b/data-transfer-object/pom.xml
index 8a484e919..fd414e596 100644
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diff --git a/decorator/pom.xml b/decorator/pom.xml
index 687de3ad8..2e1125506 100644
--- a/decorator/pom.xml
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index 118f9f75b..0d99d8a2c 100644
--- a/delegation/pom.xml
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diff --git a/dependency-injection/pom.xml b/dependency-injection/pom.xml
index 127a9b2b8..767b4066d 100644
--- a/dependency-injection/pom.xml
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diff --git a/double-checked-locking/pom.xml b/double-checked-locking/pom.xml
index d7e8414c0..b467cf36a 100644
--- a/double-checked-locking/pom.xml
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diff --git a/double-dispatch/pom.xml b/double-dispatch/pom.xml
index 85a85d831..7db852d6b 100644
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diff --git a/eip-aggregator/pom.xml b/eip-aggregator/pom.xml
index 8a51b8218..56e3d326d 100644
--- a/eip-aggregator/pom.xml
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     <dependencies>
diff --git a/eip-splitter/pom.xml b/eip-splitter/pom.xml
index 54661f946..f2ccd8172 100644
--- a/eip-splitter/pom.xml
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diff --git a/eip-wire-tap/pom.xml b/eip-wire-tap/pom.xml
index 688f4ad6d..9edc9d1a2 100644
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diff --git a/event-aggregator/pom.xml b/event-aggregator/pom.xml
index c28fded6f..d061e37a5 100644
--- a/event-aggregator/pom.xml
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@@ -28,7 +28,7 @@
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 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
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 	<dependencies>
diff --git a/event-asynchronous/pom.xml b/event-asynchronous/pom.xml
index 3c07f47bc..2c24f64e7 100644
--- a/event-asynchronous/pom.xml
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diff --git a/event-driven-architecture/pom.xml b/event-driven-architecture/pom.xml
index 4eb2a6946..fcd9a5e93 100644
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     <artifactId>event-driven-architecture</artifactId>
diff --git a/event-queue/pom.xml b/event-queue/pom.xml
index 1ef8e28af..647801947 100644
--- a/event-queue/pom.xml
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index a17d02379..0b3aad20e 100644
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diff --git a/execute-around/pom.xml b/execute-around/pom.xml
index 2e43c3e4b..65c6c2cb8 100644
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diff --git a/extension-objects/pom.xml b/extension-objects/pom.xml
index bd68a2758..f142b1130 100644
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diff --git a/facade/pom.xml b/facade/pom.xml
index deb56a382..fcfd4fc6a 100644
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diff --git a/factory-kit/pom.xml b/factory-kit/pom.xml
index 71973928f..bdbbabba2 100644
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index 4cad86fdd..cb5e1687d 100644
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diff --git a/feature-toggle/pom.xml b/feature-toggle/pom.xml
index 665847e5e..43a9b45a9 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>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/fluentinterface/pom.xml b/fluentinterface/pom.xml
index 234504396..a52a3d1c7 100644
--- a/fluentinterface/pom.xml
+++ b/fluentinterface/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/flux/pom.xml b/flux/pom.xml
index 6b9b968c8..098e816a1 100644
--- a/flux/pom.xml
+++ b/flux/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>flux</artifactId>
   <dependencies>
diff --git a/flyweight/pom.xml b/flyweight/pom.xml
index 58bbd95a8..22721ae05 100644
--- a/flyweight/pom.xml
+++ b/flyweight/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>flyweight</artifactId>
   <dependencies>
diff --git a/front-controller/pom.xml b/front-controller/pom.xml
index 966e5becc..e45e17b94 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 	<artifactId>front-controller</artifactId>
 	<dependencies>
diff --git a/guarded-suspension/pom.xml b/guarded-suspension/pom.xml
index 5ac0a6e32..de8e29804 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</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 3ed2da411..777e8e80b 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>half-sync-half-async</artifactId>
   <dependencies>
diff --git a/hexagonal/pom.xml b/hexagonal/pom.xml
index 6907ca10c..294c150ef 100644
--- a/hexagonal/pom.xml
+++ b/hexagonal/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>hexagonal</artifactId>
   <dependencies>
diff --git a/intercepting-filter/pom.xml b/intercepting-filter/pom.xml
index dc4d6a923..267c5c3cb 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>intercepting-filter</artifactId>
   <dependencies>
diff --git a/interpreter/pom.xml b/interpreter/pom.xml
index 99e399159..815d15a37 100644
--- a/interpreter/pom.xml
+++ b/interpreter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>interpreter</artifactId>
   <dependencies>
diff --git a/iterator/pom.xml b/iterator/pom.xml
index 2afca644c..51e84cac0 100644
--- a/iterator/pom.xml
+++ b/iterator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>iterator</artifactId>
   <dependencies>
diff --git a/layers/pom.xml b/layers/pom.xml
index 772c53a30..4283376d4 100644
--- a/layers/pom.xml
+++ b/layers/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 	<groupId>com.iluwatar.layers</groupId>
 	<artifactId>layers</artifactId>
diff --git a/lazy-loading/pom.xml b/lazy-loading/pom.xml
index 8d799d07c..c0e3bc8a4 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>lazy-loading</artifactId>
   <dependencies>
diff --git a/marker/pom.xml b/marker/pom.xml
index 708072d8c..8f4bb7ae6 100644
--- a/marker/pom.xml
+++ b/marker/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/mediator/pom.xml b/mediator/pom.xml
index c9369b1a9..125f5a6c7 100644
--- a/mediator/pom.xml
+++ b/mediator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>mediator</artifactId>
   <dependencies>
diff --git a/memento/pom.xml b/memento/pom.xml
index 2ad5321ba..b4fb1d2c4 100644
--- a/memento/pom.xml
+++ b/memento/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>memento</artifactId>
   <dependencies>
diff --git a/message-channel/pom.xml b/message-channel/pom.xml
index 3e3028f2a..2f93cd387 100644
--- a/message-channel/pom.xml
+++ b/message-channel/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 	<artifactId>message-channel</artifactId>
 	<dependencies>
diff --git a/model-view-controller/pom.xml b/model-view-controller/pom.xml
index f873107fa..89f51086f 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>model-view-controller</artifactId>
   <dependencies>
diff --git a/model-view-presenter/pom.xml b/model-view-presenter/pom.xml
index 60a379996..f708ebce5 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>model-view-presenter</artifactId>
   <name>model-view-presenter</name>
diff --git a/module/pom.xml b/module/pom.xml
index dde967bc6..be5f67743 100644
--- a/module/pom.xml
+++ b/module/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 	<artifactId>module</artifactId>
 	<dependencies>
diff --git a/monad/pom.xml b/monad/pom.xml
index 316c4ff9b..15303d941 100644
--- a/monad/pom.xml
+++ b/monad/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <artifactId>monad</artifactId>
     <dependencies>
diff --git a/monostate/pom.xml b/monostate/pom.xml
index 5aa68e75b..f8cfc5122 100644
--- a/monostate/pom.xml
+++ b/monostate/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>monostate</artifactId>
   <dependencies>
diff --git a/multiton/pom.xml b/multiton/pom.xml
index 4ee128a1d..990670792 100644
--- a/multiton/pom.xml
+++ b/multiton/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>multiton</artifactId>
   <dependencies>
diff --git a/mute-idiom/pom.xml b/mute-idiom/pom.xml
index 905909384..18d08e822 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 	<artifactId>mute-idiom</artifactId>
 	<dependencies>
diff --git a/mutex/pom.xml b/mutex/pom.xml
index 5c65d6305..3de74fd6d 100644
--- a/mutex/pom.xml
+++ b/mutex/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>mutex</artifactId>
   <dependencies>
diff --git a/naked-objects/dom/pom.xml b/naked-objects/dom/pom.xml
index 3efcecdca..23354d338 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 
 	<artifactId>naked-objects-dom</artifactId>
diff --git a/naked-objects/fixture/pom.xml b/naked-objects/fixture/pom.xml
index bf3cc4de8..2e78e9c52 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 
 	<artifactId>naked-objects-fixture</artifactId>
diff --git a/naked-objects/integtests/pom.xml b/naked-objects/integtests/pom.xml
index 8d2cf3b55..100c10465 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 
 	<artifactId>naked-objects-integtests</artifactId>
diff --git a/naked-objects/pom.xml b/naked-objects/pom.xml
index 222a9d321..16b993a12 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 
 	<artifactId>naked-objects</artifactId>
@@ -350,17 +350,17 @@
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-dom</artifactId>
-				<version>1.19.0-SNAPSHOT</version>
+				<version>1.19.0</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-fixture</artifactId>
-				<version>1.19.0-SNAPSHOT</version>
+				<version>1.19.0</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-webapp</artifactId>
-				<version>1.19.0-SNAPSHOT</version>
+				<version>1.19.0</version>
 			</dependency>
 
 		</dependencies>
diff --git a/naked-objects/webapp/pom.xml b/naked-objects/webapp/pom.xml
index 0f9d33bc4..7a9ab9205 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 
 	<artifactId>naked-objects-webapp</artifactId>
diff --git a/null-object/pom.xml b/null-object/pom.xml
index 92831afb0..49e2d5855 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>null-object</artifactId>
   <dependencies>
diff --git a/object-mother/pom.xml b/object-mother/pom.xml
index e58d36f7d..e9d0c8205 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>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <artifactId>object-mother</artifactId>
     <dependencies>
diff --git a/object-pool/pom.xml b/object-pool/pom.xml
index 5e59bbfd9..3ef4e7dd5 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>object-pool</artifactId>
   <dependencies>
diff --git a/observer/pom.xml b/observer/pom.xml
index 20e4aa659..5c154e243 100644
--- a/observer/pom.xml
+++ b/observer/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>observer</artifactId>
   <dependencies>
diff --git a/page-object/pom.xml b/page-object/pom.xml
index a54998d70..ece7a936c 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>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <artifactId>page-object</artifactId>
     <dependencies>
diff --git a/partial-response/pom.xml b/partial-response/pom.xml
index db0a922ee..b52316c6e 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>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/poison-pill/pom.xml b/poison-pill/pom.xml
index 5b9d48126..e4d11baa2 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>poison-pill</artifactId>
   <dependencies>
diff --git a/pom.xml b/pom.xml
index 7e669d396..3e16fa21e 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>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
     <packaging>pom</packaging>
     <inceptionYear>2014</inceptionYear>
     <properties>
diff --git a/private-class-data/pom.xml b/private-class-data/pom.xml
index ddf9cef28..09539cda0 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>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>private-class-data</artifactId>
   <dependencies>
diff --git a/producer-consumer/pom.xml b/producer-consumer/pom.xml
index ea9734518..ff17ffad7 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>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>producer-consumer</artifactId>
   <dependencies>
diff --git a/promise/pom.xml b/promise/pom.xml
index 9b600d5fb..c3f5386f1 100644
--- a/promise/pom.xml
+++ b/promise/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>promise</artifactId>
   <dependencies>
diff --git a/property/pom.xml b/property/pom.xml
index b3bc915e9..c96d56dda 100644
--- a/property/pom.xml
+++ b/property/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
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   </parent>
   <artifactId>property</artifactId>
   <dependencies>
diff --git a/prototype/pom.xml b/prototype/pom.xml
index 54c9ac987..fe434a5ba 100644
--- a/prototype/pom.xml
+++ b/prototype/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>prototype</artifactId>
   <dependencies>
diff --git a/proxy/pom.xml b/proxy/pom.xml
index 31e87c04b..3e7b78bcc 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>proxy</artifactId>
   <dependencies>
diff --git a/publish-subscribe/pom.xml b/publish-subscribe/pom.xml
index 688cda903..2e928401a 100644
--- a/publish-subscribe/pom.xml
+++ b/publish-subscribe/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 	<artifactId>publish-subscribe</artifactId>
 	<dependencies>
diff --git a/queue-load-leveling/pom.xml b/queue-load-leveling/pom.xml
index 681409e96..dc52a2586 100644
--- a/queue-load-leveling/pom.xml
+++ b/queue-load-leveling/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>queue-load-leveling</artifactId>
   <dependencies>
diff --git a/reactor/pom.xml b/reactor/pom.xml
index e8a145f7b..18d8ab378 100644
--- a/reactor/pom.xml
+++ b/reactor/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>reactor</artifactId>
   <dependencies>
diff --git a/reader-writer-lock/pom.xml b/reader-writer-lock/pom.xml
index b0dc137e4..34be6bc0d 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>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <artifactId>reader-writer-lock</artifactId>
     <dependencies>
diff --git a/repository/pom.xml b/repository/pom.xml
index cf08ba4a5..341ffe605 100644
--- a/repository/pom.xml
+++ b/repository/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <artifactId>repository</artifactId>
     <dependencies>
diff --git a/resource-acquisition-is-initialization/pom.xml b/resource-acquisition-is-initialization/pom.xml
index 3d68966c5..5ad223e85 100644
--- a/resource-acquisition-is-initialization/pom.xml
+++ b/resource-acquisition-is-initialization/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>resource-acquisition-is-initialization</artifactId>
   <dependencies>
diff --git a/retry/pom.xml b/retry/pom.xml
index 9fb98d42a..a79da285c 100644
--- a/retry/pom.xml
+++ b/retry/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <artifactId>retry</artifactId>
     <packaging>jar</packaging>
diff --git a/semaphore/pom.xml b/semaphore/pom.xml
index 6337951a4..4d86fec77 100644
--- a/semaphore/pom.xml
+++ b/semaphore/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>semaphore</artifactId>
   <dependencies>
diff --git a/servant/pom.xml b/servant/pom.xml
index 220e197f1..5632b1188 100644
--- a/servant/pom.xml
+++ b/servant/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>servant</artifactId>
   <dependencies>
diff --git a/service-layer/pom.xml b/service-layer/pom.xml
index 1a654e048..3a04b608e 100644
--- a/service-layer/pom.xml
+++ b/service-layer/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>service-layer</artifactId>
   <dependencies>
diff --git a/service-locator/pom.xml b/service-locator/pom.xml
index a8fc5ceb1..2656e06ad 100644
--- a/service-locator/pom.xml
+++ b/service-locator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>service-locator</artifactId>
   <dependencies>
diff --git a/singleton/pom.xml b/singleton/pom.xml
index f83f5e50c..a8a363d9d 100644
--- a/singleton/pom.xml
+++ b/singleton/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>singleton</artifactId>
   <dependencies>
diff --git a/specification/pom.xml b/specification/pom.xml
index cfd28ae93..4e11ebefa 100644
--- a/specification/pom.xml
+++ b/specification/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>specification</artifactId>
   <dependencies>
diff --git a/state/pom.xml b/state/pom.xml
index 478e888bf..0dff4fe87 100644
--- a/state/pom.xml
+++ b/state/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>state</artifactId>
   <dependencies>
diff --git a/step-builder/pom.xml b/step-builder/pom.xml
index 00a8006de..796e1b5ab 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>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>step-builder</artifactId>
   <dependencies>
diff --git a/strategy/pom.xml b/strategy/pom.xml
index 8bae9c46a..a6266025a 100644
--- a/strategy/pom.xml
+++ b/strategy/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>strategy</artifactId>
   <dependencies>
diff --git a/template-method/pom.xml b/template-method/pom.xml
index edfc2e2c6..23b0724c1 100644
--- a/template-method/pom.xml
+++ b/template-method/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>template-method</artifactId>
   <dependencies>
diff --git a/thread-pool/pom.xml b/thread-pool/pom.xml
index 61701e40b..7b4dc6349 100644
--- a/thread-pool/pom.xml
+++ b/thread-pool/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>thread-pool</artifactId>
   <dependencies>
diff --git a/throttling/pom.xml b/throttling/pom.xml
index 4ac14493d..d52ec9a5b 100644
--- a/throttling/pom.xml
+++ b/throttling/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/tls/pom.xml b/tls/pom.xml
index a25904707..086a00820 100644
--- a/tls/pom.xml
+++ b/tls/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>tls</artifactId>
   <dependencies>
diff --git a/tolerant-reader/pom.xml b/tolerant-reader/pom.xml
index 3acc0b188..90d4b2069 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>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>tolerant-reader</artifactId>
   <dependencies>
diff --git a/trampoline/pom.xml b/trampoline/pom.xml
index 71de3f8f2..8ab5a2374 100644
--- a/trampoline/pom.xml
+++ b/trampoline/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
 
     </parent>
     <artifactId>trampoline</artifactId>
diff --git a/twin/pom.xml b/twin/pom.xml
index ed7c9a77f..490e24cb2 100644
--- a/twin/pom.xml
+++ b/twin/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>twin</artifactId>
   <dependencies>
diff --git a/unit-of-work/pom.xml b/unit-of-work/pom.xml
index 8a75b16af..420a2918c 100644
--- a/unit-of-work/pom.xml
+++ b/unit-of-work/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <artifactId>java-design-patterns</artifactId>
         <groupId>com.iluwatar</groupId>
-        <version>1.19.0-SNAPSHOT</version>
+        <version>1.19.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/value-object/pom.xml b/value-object/pom.xml
index 82fca9508..2b09c0bf2 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>1.19.0-SNAPSHOT</version>
+		<version>1.19.0</version>
 	</parent>
 	<artifactId>value-object</artifactId>
 	<dependencies>
diff --git a/visitor/pom.xml b/visitor/pom.xml
index 01f0d4143..8c8e67a08 100644
--- a/visitor/pom.xml
+++ b/visitor/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.19.0-SNAPSHOT</version>
+    <version>1.19.0</version>
   </parent>
   <artifactId>visitor</artifactId>
   <dependencies>