diff --git a/abstract-document/pom.xml b/abstract-document/pom.xml
index 766deabb3..54b157df6 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>1.15.0</version>
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     </parent>
     <artifactId>abstract-document</artifactId>
     <dependencies>
diff --git a/abstract-factory/pom.xml b/abstract-factory/pom.xml
index f1d37068c..d37159409 100644
--- a/abstract-factory/pom.xml
+++ b/abstract-factory/pom.xml
@@ -29,7 +29,7 @@
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     <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 aa87cb8d5..8cf754618 100644
--- a/adapter/pom.xml
+++ b/adapter/pom.xml
@@ -29,7 +29,7 @@
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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 1a7c75845..477ce00c8 100644
--- a/aggregator-microservices/aggregator-service/pom.xml
+++ b/aggregator-microservices/aggregator-service/pom.xml
@@ -29,7 +29,7 @@
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         <groupId>com.iluwatar</groupId>
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diff --git a/aggregator-microservices/information-microservice/pom.xml b/aggregator-microservices/information-microservice/pom.xml
index 2a323e06d..234daa25d 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 145f1d430..bdd96eec9 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 e7ff8819c..e08ee58f8 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 4e820b0f5..e36b09fd4 100644
--- a/api-gateway/api-gateway-service/pom.xml
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   <modelVersion>4.0.0</modelVersion>
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diff --git a/api-gateway/image-microservice/pom.xml b/api-gateway/image-microservice/pom.xml
index 73bc99c48..b9430ff69 100644
--- a/api-gateway/image-microservice/pom.xml
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@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
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   <modelVersion>4.0.0</modelVersion>
diff --git a/api-gateway/pom.xml b/api-gateway/pom.xml
index dd07d1828..7fdc54f8a 100644
--- a/api-gateway/pom.xml
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diff --git a/api-gateway/price-microservice/pom.xml b/api-gateway/price-microservice/pom.xml
index 6cb04d753..68dc75640 100644
--- a/api-gateway/price-microservice/pom.xml
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   <modelVersion>4.0.0</modelVersion>
diff --git a/async-method-invocation/pom.xml b/async-method-invocation/pom.xml
index dda91cfce..1dc9a6b73 100644
--- a/async-method-invocation/pom.xml
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diff --git a/balking/pom.xml b/balking/pom.xml
index f33a74fdb..2e27d9332 100644
--- a/balking/pom.xml
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diff --git a/bridge/pom.xml b/bridge/pom.xml
index f67ec274b..7c60f8ef8 100644
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diff --git a/builder/pom.xml b/builder/pom.xml
index 69177f27b..806d61b0a 100644
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diff --git a/business-delegate/pom.xml b/business-delegate/pom.xml
index fa8f1658d..6ac3d9f4f 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>1.15.0</version>
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 	<artifactId>business-delegate</artifactId>
 	<dependencies>
diff --git a/caching/pom.xml b/caching/pom.xml
index 632f9d70a..6ec90234d 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 f07bc276a..a64ddac51 100644
--- a/callback/pom.xml
+++ b/callback/pom.xml
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>callback</artifactId>
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diff --git a/chain/pom.xml b/chain/pom.xml
index 1a3d0be20..7b283b012 100644
--- a/chain/pom.xml
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diff --git a/command/pom.xml b/command/pom.xml
index e7810fb03..cbf851701 100644
--- a/command/pom.xml
+++ b/command/pom.xml
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   <artifactId>command</artifactId>
   <dependencies>
diff --git a/composite/pom.xml b/composite/pom.xml
index 5b5e2a0bc..f3b1a38b5 100644
--- a/composite/pom.xml
+++ b/composite/pom.xml
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>composite</artifactId>
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diff --git a/converter/pom.xml b/converter/pom.xml
index 350bf4d7f..569899f1d 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/dao/pom.xml b/dao/pom.xml
index 5f23fbd12..b7de27bd4 100644
--- a/dao/pom.xml
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   <artifactId>dao</artifactId>
 
diff --git a/data-mapper/pom.xml b/data-mapper/pom.xml
index 1d5a05e60..878f02fed 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>
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 	<artifactId>data-mapper</artifactId>
 	<dependencies>
diff --git a/decorator/pom.xml b/decorator/pom.xml
index ae3eb99ec..5b6d24723 100644
--- a/decorator/pom.xml
+++ b/decorator/pom.xml
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   <artifactId>decorator</artifactId>
   <dependencies>
diff --git a/delegation/pom.xml b/delegation/pom.xml
index a6f18882d..befd02a59 100644
--- a/delegation/pom.xml
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diff --git a/dependency-injection/pom.xml b/dependency-injection/pom.xml
index eb83e5321..ccbbea9a2 100644
--- a/dependency-injection/pom.xml
+++ b/dependency-injection/pom.xml
@@ -29,7 +29,7 @@
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diff --git a/double-checked-locking/pom.xml b/double-checked-locking/pom.xml
index f73ff254b..7e19561de 100644
--- a/double-checked-locking/pom.xml
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diff --git a/double-dispatch/pom.xml b/double-dispatch/pom.xml
index ce2520aef..c87efc185 100644
--- a/double-dispatch/pom.xml
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diff --git a/event-aggregator/pom.xml b/event-aggregator/pom.xml
index ed5113f59..276aecd0c 100644
--- a/event-aggregator/pom.xml
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@@ -28,7 +28,7 @@
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 		<groupId>com.iluwatar</groupId>
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 	<artifactId>event-aggregator</artifactId>
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diff --git a/event-asynchronous/pom.xml b/event-asynchronous/pom.xml
index 5aa2eef38..a10fec55d 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 1ddc66232..f021f4023 100644
--- a/event-driven-architecture/pom.xml
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     <artifactId>event-driven-architecture</artifactId>
diff --git a/execute-around/pom.xml b/execute-around/pom.xml
index f07fe309e..765b52846 100644
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diff --git a/facade/pom.xml b/facade/pom.xml
index 97dc8c338..a9a1ed226 100644
--- a/facade/pom.xml
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@@ -29,7 +29,7 @@
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   <artifactId>facade</artifactId>
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diff --git a/factory-kit/pom.xml b/factory-kit/pom.xml
index 06cf9b7e3..0fef94e84 100644
--- a/factory-kit/pom.xml
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@@ -30,7 +30,7 @@
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diff --git a/factory-method/pom.xml b/factory-method/pom.xml
index a7625ff64..8cc506c62 100644
--- a/factory-method/pom.xml
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@@ -29,7 +29,7 @@
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diff --git a/feature-toggle/pom.xml b/feature-toggle/pom.xml
index 46e558c2d..7fbb085f2 100644
--- a/feature-toggle/pom.xml
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diff --git a/fluentinterface/pom.xml b/fluentinterface/pom.xml
index b26c29fb4..cc243123b 100644
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diff --git a/flux/pom.xml b/flux/pom.xml
index 667e851f5..158ca8c65 100644
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diff --git a/flyweight/pom.xml b/flyweight/pom.xml
index 162402ab0..d9574b589 100644
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diff --git a/front-controller/pom.xml b/front-controller/pom.xml
index 88d7bcebc..082fe27c0 100644
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@@ -30,7 +30,7 @@
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diff --git a/guarded-suspension/pom.xml b/guarded-suspension/pom.xml
index 12b7efbc7..b7423d1eb 100644
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diff --git a/half-sync-half-async/pom.xml b/half-sync-half-async/pom.xml
index 7a199b09c..2952f8d54 100644
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diff --git a/hexagonal/pom.xml b/hexagonal/pom.xml
index 0557aa545..9af418fbb 100644
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diff --git a/intercepting-filter/pom.xml b/intercepting-filter/pom.xml
index d02047137..e5082ef00 100644
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diff --git a/interpreter/pom.xml b/interpreter/pom.xml
index 743326b48..a9c4126d4 100644
--- a/interpreter/pom.xml
+++ b/interpreter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>interpreter</artifactId>
   <dependencies>
diff --git a/iterator/pom.xml b/iterator/pom.xml
index 74ad6fed4..c05c78d3c 100644
--- a/iterator/pom.xml
+++ b/iterator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
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   </parent>
   <artifactId>iterator</artifactId>
   <dependencies>
diff --git a/layers/pom.xml b/layers/pom.xml
index 3d012389d..621facbea 100644
--- a/layers/pom.xml
+++ b/layers/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 	<groupId>com.iluwatar.layers</groupId>
 	<artifactId>layers</artifactId>
diff --git a/lazy-loading/pom.xml b/lazy-loading/pom.xml
index d4d4ba144..4e95046bf 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>1.15.0</version>
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   </parent>
   <artifactId>lazy-loading</artifactId>
   <dependencies>
diff --git a/mediator/pom.xml b/mediator/pom.xml
index 7b20330af..b48324472 100644
--- a/mediator/pom.xml
+++ b/mediator/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
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   </parent>
   <artifactId>mediator</artifactId>
   <dependencies>
diff --git a/memento/pom.xml b/memento/pom.xml
index eeef15c41..0990844f7 100644
--- a/memento/pom.xml
+++ b/memento/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
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   </parent>
   <artifactId>memento</artifactId>
   <dependencies>
diff --git a/message-channel/pom.xml b/message-channel/pom.xml
index 6198e6ffa..91c631313 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>message-channel</artifactId>
 	<dependencies>
diff --git a/model-view-controller/pom.xml b/model-view-controller/pom.xml
index 82fabee55..bf7ace403 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>1.15.0</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 9d3ccdf6b..2eeedc6df 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>1.15.0</version>
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   </parent>
   <artifactId>model-view-presenter</artifactId>
   <name>model-view-presenter</name>
diff --git a/module/pom.xml b/module/pom.xml
index f1338d3e6..caa66cb54 100644
--- a/module/pom.xml
+++ b/module/pom.xml
@@ -28,7 +28,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.15.0</version>
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 	</parent>
 	<artifactId>module</artifactId>
 	<dependencies>
diff --git a/monad/pom.xml b/monad/pom.xml
index adb0b3b4f..694ba71ed 100644
--- a/monad/pom.xml
+++ b/monad/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
-        <version>1.15.0</version>
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     </parent>
     <artifactId>monad</artifactId>
     <dependencies>
diff --git a/monostate/pom.xml b/monostate/pom.xml
index 498e79b06..be7ba99a4 100644
--- a/monostate/pom.xml
+++ b/monostate/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
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   </parent>
   <artifactId>monostate</artifactId>
   <dependencies>
diff --git a/multiton/pom.xml b/multiton/pom.xml
index aabc72576..b4dd361ae 100644
--- a/multiton/pom.xml
+++ b/multiton/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
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   </parent>
   <artifactId>multiton</artifactId>
   <dependencies>
diff --git a/mute-idiom/pom.xml b/mute-idiom/pom.xml
index 036bb759b..0fedbf901 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>mute-idiom</artifactId>
 	<dependencies>
diff --git a/mutex/pom.xml b/mutex/pom.xml
index a12ba29da..0a3ad9e93 100644
--- a/mutex/pom.xml
+++ b/mutex/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
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   </parent>
   <artifactId>mutex</artifactId>
   <dependencies>
diff --git a/naked-objects/dom/pom.xml b/naked-objects/dom/pom.xml
index 895a8a8d2..9b98700b8 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-dom</artifactId>
diff --git a/naked-objects/fixture/pom.xml b/naked-objects/fixture/pom.xml
index b11796435..e48ec5b30 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-fixture</artifactId>
diff --git a/naked-objects/integtests/pom.xml b/naked-objects/integtests/pom.xml
index d44c045f4..7389e5cef 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-integtests</artifactId>
diff --git a/naked-objects/pom.xml b/naked-objects/pom.xml
index c71209513..d2cf69296 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects</artifactId>
@@ -367,17 +367,17 @@
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-dom</artifactId>
-				<version>1.15.0</version>
+				<version>1.16.0-SNAPSHOT</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-fixture</artifactId>
-				<version>1.15.0</version>
+				<version>1.16.0-SNAPSHOT</version>
 			</dependency>
 			<dependency>
 				<groupId>${project.groupId}</groupId>
 				<artifactId>naked-objects-webapp</artifactId>
-				<version>1.15.0</version>
+				<version>1.16.0-SNAPSHOT</version>
 			</dependency>
 
 		</dependencies>
diff --git a/naked-objects/webapp/pom.xml b/naked-objects/webapp/pom.xml
index 45d413128..c415050bc 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>naked-objects-webapp</artifactId>
diff --git a/null-object/pom.xml b/null-object/pom.xml
index 4fa75ceeb..6f96d777c 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>
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   </parent>
   <artifactId>null-object</artifactId>
   <dependencies>
diff --git a/object-mother/pom.xml b/object-mother/pom.xml
index 4c8a8252c..f2f933e49 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>1.15.0</version>
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     </parent>
     <artifactId>object-mother</artifactId>
     <dependencies>
diff --git a/object-pool/pom.xml b/object-pool/pom.xml
index 4ab51470a..bf2e3d4ae 100644
--- a/object-pool/pom.xml
+++ b/object-pool/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>object-pool</artifactId>
   <dependencies>
diff --git a/observer/pom.xml b/observer/pom.xml
index f52be8ab1..a854aaada 100644
--- a/observer/pom.xml
+++ b/observer/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>observer</artifactId>
   <dependencies>
diff --git a/page-object/pom.xml b/page-object/pom.xml
index aec481498..748342d99 100644
--- a/page-object/pom.xml
+++ b/page-object/pom.xml
@@ -29,7 +29,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
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     </parent>
     <artifactId>page-object</artifactId>
     <dependencies>
diff --git a/poison-pill/pom.xml b/poison-pill/pom.xml
index ecb9ccfdc..c1c8432a1 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>1.15.0</version>
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   </parent>
   <artifactId>poison-pill</artifactId>
   <dependencies>
diff --git a/pom.xml b/pom.xml
index a548b6bf1..4b9740857 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>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
     <packaging>pom</packaging>
     <inceptionYear>2014</inceptionYear>
     <properties>
diff --git a/private-class-data/pom.xml b/private-class-data/pom.xml
index 496b48283..de75796dc 100644
--- a/private-class-data/pom.xml
+++ b/private-class-data/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   </parent>
   <artifactId>private-class-data</artifactId>
   <dependencies>
diff --git a/producer-consumer/pom.xml b/producer-consumer/pom.xml
index 8570d98bc..ccdfc135a 100644
--- a/producer-consumer/pom.xml
+++ b/producer-consumer/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>producer-consumer</artifactId>
   <dependencies>
diff --git a/promise/pom.xml b/promise/pom.xml
index 5bf362613..1b20fd784 100644
--- a/promise/pom.xml
+++ b/promise/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>promise</artifactId>
   <dependencies>
diff --git a/property/pom.xml b/property/pom.xml
index bf0840739..b488f8e57 100644
--- a/property/pom.xml
+++ b/property/pom.xml
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   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>property</artifactId>
   <dependencies>
diff --git a/prototype/pom.xml b/prototype/pom.xml
index 4145ac538..a73223b9c 100644
--- a/prototype/pom.xml
+++ b/prototype/pom.xml
@@ -29,7 +29,7 @@
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     <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 bf32d8556..293f3098d 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>proxy</artifactId>
   <dependencies>
diff --git a/publish-subscribe/pom.xml b/publish-subscribe/pom.xml
index ee6a6720b..3f969eac9 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>publish-subscribe</artifactId>
 	<dependencies>
diff --git a/queue-load-leveling/pom.xml b/queue-load-leveling/pom.xml
index 6167570cb..3966dd4db 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>1.15.0</version>
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   <artifactId>queue-load-leveling</artifactId>
   <dependencies>
diff --git a/reactor/pom.xml b/reactor/pom.xml
index 69dccf542..ca6440318 100644
--- a/reactor/pom.xml
+++ b/reactor/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>reactor</artifactId>
   <dependencies>
diff --git a/reader-writer-lock/pom.xml b/reader-writer-lock/pom.xml
index d811d3c8b..7a873c551 100644
--- a/reader-writer-lock/pom.xml
+++ b/reader-writer-lock/pom.xml
@@ -30,7 +30,7 @@
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         <groupId>com.iluwatar</groupId>
         <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 879d1b58e..cbb431e39 100644
--- a/repository/pom.xml
+++ b/repository/pom.xml
@@ -29,7 +29,7 @@
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         <groupId>com.iluwatar</groupId>
         <artifactId>java-design-patterns</artifactId>
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     <artifactId>repository</artifactId>
     <dependencies>
diff --git a/resource-acquisition-is-initialization/pom.xml b/resource-acquisition-is-initialization/pom.xml
index 92707a5bb..fae94e91c 100644
--- a/resource-acquisition-is-initialization/pom.xml
+++ b/resource-acquisition-is-initialization/pom.xml
@@ -29,7 +29,7 @@
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     <artifactId>java-design-patterns</artifactId>
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   <artifactId>resource-acquisition-is-initialization</artifactId>
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diff --git a/semaphore/pom.xml b/semaphore/pom.xml
index 22ee544c6..1d606ae6c 100644
--- a/semaphore/pom.xml
+++ b/semaphore/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>semaphore</artifactId>
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diff --git a/servant/pom.xml b/servant/pom.xml
index f861ae746..185076b59 100644
--- a/servant/pom.xml
+++ b/servant/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>servant</artifactId>
   <dependencies>
diff --git a/service-layer/pom.xml b/service-layer/pom.xml
index af0d96a02..8028bcaea 100644
--- a/service-layer/pom.xml
+++ b/service-layer/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>service-layer</artifactId>
   <dependencies>
diff --git a/service-locator/pom.xml b/service-locator/pom.xml
index 4046670a0..3c9551770 100644
--- a/service-locator/pom.xml
+++ b/service-locator/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>service-locator</artifactId>
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diff --git a/singleton/pom.xml b/singleton/pom.xml
index c68d58235..672807527 100644
--- a/singleton/pom.xml
+++ b/singleton/pom.xml
@@ -29,7 +29,7 @@
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     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
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   <artifactId>singleton</artifactId>
   <dependencies>
diff --git a/specification/pom.xml b/specification/pom.xml
index 8a58a8dd6..33cc0f1e5 100644
--- a/specification/pom.xml
+++ b/specification/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>specification</artifactId>
   <dependencies>
diff --git a/state/pom.xml b/state/pom.xml
index f0245dfd9..7c0e9ab3f 100644
--- a/state/pom.xml
+++ b/state/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>state</artifactId>
   <dependencies>
diff --git a/step-builder/pom.xml b/step-builder/pom.xml
index 5d63f0187..e98069d60 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>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>step-builder</artifactId>
   <dependencies>
diff --git a/strategy/pom.xml b/strategy/pom.xml
index 88749d2cb..d29f4b2ba 100644
--- a/strategy/pom.xml
+++ b/strategy/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>strategy</artifactId>
   <dependencies>
diff --git a/template-method/pom.xml b/template-method/pom.xml
index 81ac4ddfb..a2ceadc10 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>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>template-method</artifactId>
   <dependencies>
diff --git a/thread-pool/pom.xml b/thread-pool/pom.xml
index 127fdad8d..2efd4cb50 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>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>thread-pool</artifactId>
   <dependencies>
diff --git a/tls/pom.xml b/tls/pom.xml
index 3ab25fadd..99849bf22 100644
--- a/tls/pom.xml
+++ b/tls/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>tls</artifactId>
   <dependencies>
diff --git a/tolerant-reader/pom.xml b/tolerant-reader/pom.xml
index ee983bbba..4e614e44c 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>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>tolerant-reader</artifactId>
   <dependencies>
diff --git a/twin/pom.xml b/twin/pom.xml
index 2b57a6cd4..15b2e3094 100644
--- a/twin/pom.xml
+++ b/twin/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>twin</artifactId>
   <dependencies>
diff --git a/value-object/pom.xml b/value-object/pom.xml
index 4b9958fa5..90716fbcc 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>1.15.0</version>
+		<version>1.16.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>value-object</artifactId>
 	<dependencies>
diff --git a/visitor/pom.xml b/visitor/pom.xml
index 48a68386c..9acd24003 100644
--- a/visitor/pom.xml
+++ b/visitor/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.15.0</version>
+    <version>1.16.0-SNAPSHOT</version>
   </parent>
   <artifactId>visitor</artifactId>
   <dependencies>