diff --git a/coverage-reports/pom.xml b/coverage-reports/pom.xml
index 3cc8af40b6..fb3f462b7a 100644
--- a/coverage-reports/pom.xml
+++ b/coverage-reports/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>io.siddhi</groupId>
         <artifactId>siddhi</artifactId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/siddhi-annotations/pom.xml b/modules/siddhi-annotations/pom.xml
index 5b43555d15..af1a6506c6 100644
--- a/modules/siddhi-annotations/pom.xml
+++ b/modules/siddhi-annotations/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>io.siddhi</groupId>
         <artifactId>siddhi</artifactId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../..</relativePath>
     </parent>
 
diff --git a/modules/siddhi-core/pom.xml b/modules/siddhi-core/pom.xml
index 526c14cdce..49bc513bf9 100644
--- a/modules/siddhi-core/pom.xml
+++ b/modules/siddhi-core/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../pom.xml</relativePath>
 
     </parent>
diff --git a/modules/siddhi-core/siddhi-core-doc-gen/pom.xml b/modules/siddhi-core/siddhi-core-doc-gen/pom.xml
index 7ab41ccdd3..a54bb9cd86 100644
--- a/modules/siddhi-core/siddhi-core-doc-gen/pom.xml
+++ b/modules/siddhi-core/siddhi-core-doc-gen/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-doc-gen/pom.xml b/modules/siddhi-doc-gen/pom.xml
index fd402ff79e..dfdf910a5a 100644
--- a/modules/siddhi-doc-gen/pom.xml
+++ b/modules/siddhi-doc-gen/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-feature/pom.xml b/modules/siddhi-feature/pom.xml
index ab8afaa3c5..c9fa4f836d 100644
--- a/modules/siddhi-feature/pom.xml
+++ b/modules/siddhi-feature/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/siddhi-query-api/pom.xml b/modules/siddhi-query-api/pom.xml
index 7cd1ad750d..9b2bb5771b 100644
--- a/modules/siddhi-query-api/pom.xml
+++ b/modules/siddhi-query-api/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-query-compiler/pom.xml b/modules/siddhi-query-compiler/pom.xml
index 8f20d7c2ab..e3767eb953 100644
--- a/modules/siddhi-query-compiler/pom.xml
+++ b/modules/siddhi-query-compiler/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-samples/performance-samples/pom.xml b/modules/siddhi-samples/performance-samples/pom.xml
index 3532e1bee1..8c529f8e84 100644
--- a/modules/siddhi-samples/performance-samples/pom.xml
+++ b/modules/siddhi-samples/performance-samples/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>io.siddhi</groupId>
         <artifactId>siddhi-samples</artifactId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>performance-samples</artifactId>
diff --git a/modules/siddhi-samples/pom.xml b/modules/siddhi-samples/pom.xml
index 1c523ecdac..50e90bda3b 100644
--- a/modules/siddhi-samples/pom.xml
+++ b/modules/siddhi-samples/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/siddhi-samples/quick-start-samples/pom.xml b/modules/siddhi-samples/quick-start-samples/pom.xml
index 64e228d15e..381700276c 100644
--- a/modules/siddhi-samples/quick-start-samples/pom.xml
+++ b/modules/siddhi-samples/quick-start-samples/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>siddhi-samples</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/modules/siddhi-service/pom.xml b/modules/siddhi-service/pom.xml
index 4a1dcb4702..e551167111 100644
--- a/modules/siddhi-service/pom.xml
+++ b/modules/siddhi-service/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>siddhi</artifactId>
         <groupId>io.siddhi</groupId>
-        <version>5.1.5-SNAPSHOT</version>
+        <version>5.1.5</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/pom.xml b/pom.xml
index 49703bd903..add4e17cbc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <groupId>io.siddhi</groupId>
     <artifactId>siddhi</artifactId>
     <packaging>pom</packaging>
-    <version>5.1.5-SNAPSHOT</version>
+    <version>5.1.5</version>
     <name>Siddhi</name>
     <description>Siddhi, Stream Processing and Complex Event Processing Engine</description>
 
@@ -834,7 +834,7 @@
         <url>https://github.com/siddhi-io/siddhi.git</url>
         <developerConnection>scm:git:https://github.com/siddhi-io/siddhi.git</developerConnection>
         <connection>scm:git:https://github.com/siddhi-io/siddhi.git</connection>
-        <tag>HEAD</tag>
+        <tag>v5.1.5</tag>
     </scm>
 
     <repositories>