diff --git a/modules/swagger-annotations/pom.xml b/modules/swagger-annotations/pom.xml
index 0872785bf6..a73540f7db 100644
--- a/modules/swagger-annotations/pom.xml
+++ b/modules/swagger-annotations/pom.xml
@@ -3,13 +3,13 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.swagger</groupId>
     <artifactId>swagger-annotations</artifactId>
-    <version>1.5.20</version>
+    <version>1.5.21-SNAPSHOT</version>
     <packaging>bundle</packaging>
     <name>swagger-annotations</name>
     <build>
diff --git a/modules/swagger-core/pom.xml b/modules/swagger-core/pom.xml
index 0b3ffa9b39..4964863061 100644
--- a/modules/swagger-core/pom.xml
+++ b/modules/swagger-core/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/swagger-hibernate-validations/pom.xml b/modules/swagger-hibernate-validations/pom.xml
index 56760f065b..7fd2b05791 100644
--- a/modules/swagger-hibernate-validations/pom.xml
+++ b/modules/swagger-hibernate-validations/pom.xml
@@ -4,14 +4,14 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.swagger</groupId>
     <artifactId>swagger-hibernate-validations</artifactId>
     <packaging>jar</packaging>
-    <version>1.5.20</version>
+    <version>1.5.21-SNAPSHOT</version>
     <name>swagger-hibernate-validations</name>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
diff --git a/modules/swagger-jaxrs/pom.xml b/modules/swagger-jaxrs/pom.xml
index 48406ed3d5..37698a6300 100644
--- a/modules/swagger-jaxrs/pom.xml
+++ b/modules/swagger-jaxrs/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/swagger-jersey-jaxrs/pom.xml b/modules/swagger-jersey-jaxrs/pom.xml
index 8e50b625fd..eaa5834a99 100644
--- a/modules/swagger-jersey-jaxrs/pom.xml
+++ b/modules/swagger-jersey-jaxrs/pom.xml
@@ -4,14 +4,14 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.swagger</groupId>
     <artifactId>swagger-jersey-jaxrs</artifactId>
     <packaging>jar</packaging>
-    <version>1.5.20</version>
+    <version>1.5.21-SNAPSHOT</version>
     <name>swagger-jersey-jaxrs</name>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
diff --git a/modules/swagger-jersey2-jaxrs/pom.xml b/modules/swagger-jersey2-jaxrs/pom.xml
index 9efa52fba6..fcb43d0e30 100644
--- a/modules/swagger-jersey2-jaxrs/pom.xml
+++ b/modules/swagger-jersey2-jaxrs/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/swagger-models/pom.xml b/modules/swagger-models/pom.xml
index cfef302adf..25305d0230 100644
--- a/modules/swagger-models/pom.xml
+++ b/modules/swagger-models/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/swagger-mule/pom.xml b/modules/swagger-mule/pom.xml
index 7879440eaa..80698d7f96 100644
--- a/modules/swagger-mule/pom.xml
+++ b/modules/swagger-mule/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/swagger-servlet/pom.xml b/modules/swagger-servlet/pom.xml
index 72cf4e1e0b..5224b85f11 100644
--- a/modules/swagger-servlet/pom.xml
+++ b/modules/swagger-servlet/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.swagger</groupId>
         <artifactId>swagger-project</artifactId>
-        <version>1.5.20</version>
+        <version>1.5.21-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/pom.xml b/pom.xml
index 6a956513a1..ebc9563d8c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
     <artifactId>swagger-project</artifactId>
     <packaging>pom</packaging>
     <name>swagger-project</name>
-    <version>1.5.20</version>
+    <version>1.5.21-SNAPSHOT</version>
     <url>https://github.com/swagger-api/swagger-core</url>
     <scm>
         <connection>scm:git:git@github.com:swagger-api/swagger-core.git</connection>