diff --git a/abstract-factory/pom.xml b/abstract-factory/pom.xml
index 0e3be76d5..798093c01 100644
--- a/abstract-factory/pom.xml
+++ b/abstract-factory/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>abstract-factory</artifactId>
   <dependencies>
diff --git a/adapter/pom.xml b/adapter/pom.xml
index a0f738f34..8def28655 100644
--- a/adapter/pom.xml
+++ b/adapter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>adapter</artifactId>
   <dependencies>
diff --git a/async-method-invocation/pom.xml b/async-method-invocation/pom.xml
index 56d3ffffc..699258d93 100644
--- a/async-method-invocation/pom.xml
+++ b/async-method-invocation/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>async-method-invocation</artifactId>
   <dependencies>
diff --git a/bridge/pom.xml b/bridge/pom.xml
index d633718db..01bd26061 100644
--- a/bridge/pom.xml
+++ b/bridge/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>bridge</artifactId>
   <dependencies>
diff --git a/builder/pom.xml b/builder/pom.xml
index 9649f8454..c5405d0c6 100644
--- a/builder/pom.xml
+++ b/builder/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>builder</artifactId>
   <dependencies>
diff --git a/business-delegate/pom.xml b/business-delegate/pom.xml
index 788072429..2a7e77e3c 100644
--- a/business-delegate/pom.xml
+++ b/business-delegate/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 	<artifactId>business-delegate</artifactId>
 	<dependencies>
diff --git a/callback/pom.xml b/callback/pom.xml
index 89759e6d8..d54b76172 100644
--- a/callback/pom.xml
+++ b/callback/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>callback</artifactId>
   <dependencies>
diff --git a/chain/pom.xml b/chain/pom.xml
index da67b2505..f4a712260 100644
--- a/chain/pom.xml
+++ b/chain/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>chain</artifactId>
   <dependencies>
diff --git a/command/pom.xml b/command/pom.xml
index ae5d88f2d..10bc00f0c 100644
--- a/command/pom.xml
+++ b/command/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>command</artifactId>
   <dependencies>
diff --git a/composite/pom.xml b/composite/pom.xml
index c2842b45b..4c910e451 100644
--- a/composite/pom.xml
+++ b/composite/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>composite</artifactId>
   <dependencies>
diff --git a/dao/pom.xml b/dao/pom.xml
index 505925553..6653741e4 100644
--- a/dao/pom.xml
+++ b/dao/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>dao</artifactId>
   <dependencies>
diff --git a/decorator/pom.xml b/decorator/pom.xml
index a44c99c71..1b93a171c 100644
--- a/decorator/pom.xml
+++ b/decorator/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>decorator</artifactId>
   <dependencies>
diff --git a/dependency-injection/pom.xml b/dependency-injection/pom.xml
index 984a5015c..70300b617 100644
--- a/dependency-injection/pom.xml
+++ b/dependency-injection/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>dependency-injection</artifactId>
   <dependencies>
diff --git a/double-checked-locking/pom.xml b/double-checked-locking/pom.xml
index 48a18fe95..21eb281c6 100644
--- a/double-checked-locking/pom.xml
+++ b/double-checked-locking/pom.xml
@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>double-checked-locking</artifactId>
   <dependencies>
diff --git a/double-dispatch/pom.xml b/double-dispatch/pom.xml
index aba8ab47c..0d7462486 100644
--- a/double-dispatch/pom.xml
+++ b/double-dispatch/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>double-dispatch</artifactId>
   <dependencies>
diff --git a/event-aggregator/pom.xml b/event-aggregator/pom.xml
index 28f508700..90f488729 100644
--- a/event-aggregator/pom.xml
+++ b/event-aggregator/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 	<artifactId>event-aggregator</artifactId>
 	<dependencies>
diff --git a/execute-around/pom.xml b/execute-around/pom.xml
index 039d6666f..d8d41f5d8 100644
--- a/execute-around/pom.xml
+++ b/execute-around/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>execute-around</artifactId>
   <dependencies>
diff --git a/facade/pom.xml b/facade/pom.xml
index 40f732f8e..53ac6fd67 100644
--- a/facade/pom.xml
+++ b/facade/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>facade</artifactId>
   <dependencies>
diff --git a/factory-method/pom.xml b/factory-method/pom.xml
index 2143e3103..1812b006d 100644
--- a/factory-method/pom.xml
+++ b/factory-method/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>factory-method</artifactId>
   <dependencies>
diff --git a/flux/pom.xml b/flux/pom.xml
index 81599671b..367598fa2 100644
--- a/flux/pom.xml
+++ b/flux/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>flux</artifactId>
   <dependencies>
diff --git a/flyweight/pom.xml b/flyweight/pom.xml
index d7d070158..87903217c 100644
--- a/flyweight/pom.xml
+++ b/flyweight/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>flyweight</artifactId>
   <dependencies>
diff --git a/front-controller/pom.xml b/front-controller/pom.xml
index 2e2eb2626..d0fcc001f 100644
--- a/front-controller/pom.xml
+++ b/front-controller/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 	<artifactId>front-controller</artifactId>
 	<dependencies>
diff --git a/intercepting-filter/pom.xml b/intercepting-filter/pom.xml
index 5c7135de9..b4b5db5ae 100644
--- a/intercepting-filter/pom.xml
+++ b/intercepting-filter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
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   </parent>
   <artifactId>intercepting-filter</artifactId>
   <dependencies>
diff --git a/interpreter/pom.xml b/interpreter/pom.xml
index 6ff751018..f2778e0cd 100644
--- a/interpreter/pom.xml
+++ b/interpreter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>interpreter</artifactId>
   <dependencies>
diff --git a/iterator/pom.xml b/iterator/pom.xml
index f63f87631..b77939c9d 100644
--- a/iterator/pom.xml
+++ b/iterator/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>iterator</artifactId>
   <dependencies>
diff --git a/lazy-loading/pom.xml b/lazy-loading/pom.xml
index 6d1df928a..cbbafae14 100644
--- a/lazy-loading/pom.xml
+++ b/lazy-loading/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>lazy-loading</artifactId>
   <dependencies>
diff --git a/mediator/pom.xml b/mediator/pom.xml
index cf4e0cb33..2f3f83ff5 100644
--- a/mediator/pom.xml
+++ b/mediator/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>mediator</artifactId>
   <dependencies>
diff --git a/memento/pom.xml b/memento/pom.xml
index a3f7157f2..ccc2bd1e2 100644
--- a/memento/pom.xml
+++ b/memento/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>memento</artifactId>
   <dependencies>
diff --git a/model-view-controller/pom.xml b/model-view-controller/pom.xml
index fcf21f472..3a9167f5e 100644
--- a/model-view-controller/pom.xml
+++ b/model-view-controller/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>model-view-controller</artifactId>
   <dependencies>
diff --git a/model-view-presenter/pom.xml b/model-view-presenter/pom.xml
index 825323c63..5277e57ab 100644
--- a/model-view-presenter/pom.xml
+++ b/model-view-presenter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>model-view-presenter</artifactId>
   <name>model-view-presenter</name>
diff --git a/multiton/pom.xml b/multiton/pom.xml
index dea5db5c0..8f1220119 100644
--- a/multiton/pom.xml
+++ b/multiton/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>multiton</artifactId>
   <dependencies>
diff --git a/naked-objects/dom/pom.xml b/naked-objects/dom/pom.xml
index 60bb6976e..73cfd6a73 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>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 
 	<artifactId>naked-objects-dom</artifactId>
diff --git a/naked-objects/fixture/pom.xml b/naked-objects/fixture/pom.xml
index 3c2ef574d..b0146e84e 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>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 
 	<artifactId>naked-objects-fixture</artifactId>
diff --git a/naked-objects/integtests/pom.xml b/naked-objects/integtests/pom.xml
index f49716373..9e595f7b9 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>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 
 	<artifactId>naked-objects-integtests</artifactId>
diff --git a/naked-objects/pom.xml b/naked-objects/pom.xml
index dacc3d3ef..56acd4a15 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>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 
 	<artifactId>naked-objects</artifactId>
@@ -359,17 +359,17 @@
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-dom</artifactId>
-				<version>1.4.0</version>
+				<version>1.5.0</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-fixture</artifactId>
-				<version>1.4.0</version>
+				<version>1.5.0</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-webapp</artifactId>
-				<version>1.4.0</version>
+				<version>1.5.0</version>
 			</dependency>
 
 		</dependencies>
diff --git a/naked-objects/webapp/pom.xml b/naked-objects/webapp/pom.xml
index e21f4fe2e..fb80173f2 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>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 
 	<artifactId>naked-objects-webapp</artifactId>
diff --git a/null-object/pom.xml b/null-object/pom.xml
index 622814fa2..dfa1c6891 100644
--- a/null-object/pom.xml
+++ b/null-object/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>null-object</artifactId>
   <dependencies>
diff --git a/object-pool/pom.xml b/object-pool/pom.xml
index ed26c2e93..3226bf71c 100644
--- a/object-pool/pom.xml
+++ b/object-pool/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>object-pool</artifactId>
   <dependencies>
diff --git a/observer/pom.xml b/observer/pom.xml
index be30adb8b..49a484edf 100644
--- a/observer/pom.xml
+++ b/observer/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>observer</artifactId>
   <dependencies>
diff --git a/poison-pill/pom.xml b/poison-pill/pom.xml
index 9a0323c3e..c3a5e46c1 100644
--- a/poison-pill/pom.xml
+++ b/poison-pill/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>poison-pill</artifactId>
   <dependencies>
diff --git a/pom.xml b/pom.xml
index 888008055..db468a2fb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
 	<groupId>com.iluwatar</groupId>
 	<artifactId>java-design-patterns</artifactId>
-	<version>1.4.0</version>
+	<version>1.5.0</version>
 	<packaging>pom</packaging>
 
 	<properties>
diff --git a/private-class-data/pom.xml b/private-class-data/pom.xml
index 29fd33975..6e6817621 100644
--- a/private-class-data/pom.xml
+++ b/private-class-data/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>private-class-data</artifactId>
   <dependencies>
diff --git a/property/pom.xml b/property/pom.xml
index a34e16124..6b0511fe0 100644
--- a/property/pom.xml
+++ b/property/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>property</artifactId>
   <dependencies>
diff --git a/prototype/pom.xml b/prototype/pom.xml
index d1211d63c..39d8b7d33 100644
--- a/prototype/pom.xml
+++ b/prototype/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>prototype</artifactId>
   <dependencies>
diff --git a/proxy/pom.xml b/proxy/pom.xml
index 1257e4c76..560c456b8 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>proxy</artifactId>
   <dependencies>
diff --git a/repository/pom.xml b/repository/pom.xml
index 9d17bc14a..fe3ca4c0d 100644
--- a/repository/pom.xml
+++ b/repository/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.4.0</version>
+		<version>1.5.0</version>
 	</parent>
 	<artifactId>repository</artifactId>
 	<dependencies>
diff --git a/resource-acquisition-is-initialization/pom.xml b/resource-acquisition-is-initialization/pom.xml
index 39a4ccc98..fb965ca2d 100644
--- a/resource-acquisition-is-initialization/pom.xml
+++ b/resource-acquisition-is-initialization/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>resource-acquisition-is-initialization</artifactId>
   <dependencies>
diff --git a/servant/pom.xml b/servant/pom.xml
index 0a885537d..b59a470f2 100644
--- a/servant/pom.xml
+++ b/servant/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>servant</artifactId>
   <dependencies>
diff --git a/service-layer/pom.xml b/service-layer/pom.xml
index 305733d2d..96e4e6dbf 100644
--- a/service-layer/pom.xml
+++ b/service-layer/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>service-layer</artifactId>
   <dependencies>
diff --git a/service-locator/pom.xml b/service-locator/pom.xml
index d64b7ad6d..6b287242e 100644
--- a/service-locator/pom.xml
+++ b/service-locator/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>service-locator</artifactId>
   <dependencies>
diff --git a/singleton/pom.xml b/singleton/pom.xml
index 02f98932f..dfb5cff82 100644
--- a/singleton/pom.xml
+++ b/singleton/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>singleton</artifactId>
   <dependencies>
diff --git a/specification/pom.xml b/specification/pom.xml
index d1303c858..53e92fef1 100644
--- a/specification/pom.xml
+++ b/specification/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>specification</artifactId>
   <dependencies>
diff --git a/state/pom.xml b/state/pom.xml
index f7b1275c1..e9178d0ae 100644
--- a/state/pom.xml
+++ b/state/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>state</artifactId>
   <dependencies>
diff --git a/strategy/pom.xml b/strategy/pom.xml
index c33857bd0..c24ccf9af 100644
--- a/strategy/pom.xml
+++ b/strategy/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>strategy</artifactId>
   <dependencies>
diff --git a/template-method/pom.xml b/template-method/pom.xml
index 3613c5af7..b0063c79e 100644
--- a/template-method/pom.xml
+++ b/template-method/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>template-method</artifactId>
   <dependencies>
diff --git a/thread-pool/pom.xml b/thread-pool/pom.xml
index 2190d9a72..21f0bad3d 100644
--- a/thread-pool/pom.xml
+++ b/thread-pool/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>thread-pool</artifactId>
   <dependencies>
diff --git a/tolerant-reader/pom.xml b/tolerant-reader/pom.xml
index 220542548..fb28424d4 100644
--- a/tolerant-reader/pom.xml
+++ b/tolerant-reader/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>tolerant-reader</artifactId>
   <dependencies>
diff --git a/visitor/pom.xml b/visitor/pom.xml
index 727778cee..a420b3269 100644
--- a/visitor/pom.xml
+++ b/visitor/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
   <artifactId>visitor</artifactId>
   <dependencies>