diff --git a/README.md b/README.md
index 70873a50dfb..313408f82a6 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ dependency example:
 <dependency>
     <groupId>io.swagger.codegen.v3</groupId>
     <artifactId>swagger-codegen-maven-plugin</artifactId>
-    <version>3.0.56</version>
+    <version>3.0.57-SNAPSHOT</version>
 </dependency>
 ```
 
diff --git a/modules/swagger-codegen-cli/pom.xml b/modules/swagger-codegen-cli/pom.xml
index c41b0d28604..ebe510509bd 100644
--- a/modules/swagger-codegen-cli/pom.xml
+++ b/modules/swagger-codegen-cli/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger.codegen.v3</groupId>
         <artifactId>swagger-codegen-project</artifactId>
-        <version>3.0.56</version>
+        <version>3.0.57-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/swagger-codegen-maven-plugin/pom.xml b/modules/swagger-codegen-maven-plugin/pom.xml
index 7936c97d216..bac4d39c6c4 100644
--- a/modules/swagger-codegen-maven-plugin/pom.xml
+++ b/modules/swagger-codegen-maven-plugin/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>io.swagger.codegen.v3</groupId>
         <artifactId>swagger-codegen-project</artifactId>
-        <version>3.0.56</version>
+        <version>3.0.57-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <artifactId>swagger-codegen-maven-plugin</artifactId>
diff --git a/modules/swagger-codegen/pom.xml b/modules/swagger-codegen/pom.xml
index 3ec956b5c94..e181f82f679 100644
--- a/modules/swagger-codegen/pom.xml
+++ b/modules/swagger-codegen/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger.codegen.v3</groupId>
         <artifactId>swagger-codegen-project</artifactId>
-        <version>3.0.56</version>
+        <version>3.0.57-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/modules/swagger-generator/pom.xml b/modules/swagger-generator/pom.xml
index 2b5b9198a98..8eb20b2e0c8 100644
--- a/modules/swagger-generator/pom.xml
+++ b/modules/swagger-generator/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.swagger.codegen.v3</groupId>
         <artifactId>swagger-codegen-project</artifactId>
-        <version>3.0.56</version>
+        <version>3.0.57-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <artifactId>swagger-generator</artifactId>
diff --git a/modules/swagger-generator/src/main/resources/openapi.yaml b/modules/swagger-generator/src/main/resources/openapi.yaml
index 0a4cd5fea9e..4e01e59995d 100644
--- a/modules/swagger-generator/src/main/resources/openapi.yaml
+++ b/modules/swagger-generator/src/main/resources/openapi.yaml
@@ -4,7 +4,7 @@ servers:
 info:
   description: 'This is an online swagger codegen server.  You can find out more at
     https://github.com/swagger-api/swagger-codegen or on [irc.freenode.net, #swagger](http://swagger.io/irc/).'
-  version: 3.0.56
+  version: 3.0.57-SNAPSHOT
   title: Swagger Generator
   license:
     name: Apache 2.0
diff --git a/pom.docker.xml b/pom.docker.xml
index f2bce13116e..56f025fa74d 100644
--- a/pom.docker.xml
+++ b/pom.docker.xml
@@ -9,7 +9,7 @@
     <artifactId>swagger-codegen-project</artifactId>
     <packaging>pom</packaging>
     <name>swagger-codegen-project</name>
-    <version>3.0.56</version>
+    <version>3.0.57-SNAPSHOT</version>
     <url>https://github.com/swagger-api/swagger-codegen</url>
     <scm>
         <connection>scm:git:git@github.com:swagger-api/swagger-codegen.git</connection>
@@ -1118,7 +1118,7 @@
     </repositories>
     <properties>
         <maven.compiler.release>8</maven.compiler.release>
-        <swagger-codegen-generators-version>1.0.49</swagger-codegen-generators-version>
+        <swagger-codegen-generators-version>1.0.50-SNAPSHOT</swagger-codegen-generators-version>
         <swagger-core-version>2.2.20</swagger-core-version>
         <swagger-core-version-v1>1.6.12</swagger-core-version-v1>
         <swagger-parser-version>2.1.19</swagger-parser-version>
diff --git a/pom.java11.xml b/pom.java11.xml
index 19e7098adb7..b7636a97d94 100644
--- a/pom.java11.xml
+++ b/pom.java11.xml
@@ -9,7 +9,7 @@
     <artifactId>swagger-codegen-project</artifactId>
     <packaging>pom</packaging>
     <name>swagger-codegen-project</name>
-    <version>3.0.56</version>
+    <version>3.0.57-SNAPSHOT</version>
     <url>https://github.com/swagger-api/swagger-codegen</url>
     <scm>
         <connection>scm:git:git@github.com:swagger-api/swagger-codegen.git</connection>
@@ -1219,7 +1219,7 @@
     </repositories>
     <properties>
         <maven.compiler.release>8</maven.compiler.release>
-        <swagger-codegen-generators-version>1.0.49</swagger-codegen-generators-version>
+        <swagger-codegen-generators-version>1.0.50-SNAPSHOT</swagger-codegen-generators-version>
         <swagger-core-version>2.2.20</swagger-core-version>
         <swagger-core-version-v1>1.6.12</swagger-core-version-v1>
         <swagger-parser-version>2.1.19</swagger-parser-version>
diff --git a/pom.java8.xml b/pom.java8.xml
index df47e1421a5..2253cb40bb8 100644
--- a/pom.java8.xml
+++ b/pom.java8.xml
@@ -9,7 +9,7 @@
     <artifactId>swagger-codegen-project</artifactId>
     <packaging>pom</packaging>
     <name>swagger-codegen-project</name>
-    <version>3.0.56</version>
+    <version>3.0.57-SNAPSHOT</version>
     <url>https://github.com/swagger-api/swagger-codegen</url>
     <scm>
         <connection>scm:git:git@github.com:swagger-api/swagger-codegen.git</connection>
@@ -1222,7 +1222,7 @@
         </repository>
     </repositories>
     <properties>
-        <swagger-codegen-generators-version>1.0.49</swagger-codegen-generators-version>
+        <swagger-codegen-generators-version>1.0.50-SNAPSHOT</swagger-codegen-generators-version>
         <swagger-core-version>2.2.20</swagger-core-version>
         <swagger-core-version-v1>1.6.12</swagger-core-version-v1>
         <swagger-parser-version>2.1.19</swagger-parser-version>
diff --git a/pom.xml b/pom.xml
index b7cd4b1fc74..731ef36ee7a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
     <artifactId>swagger-codegen-project</artifactId>
     <packaging>pom</packaging>
     <name>swagger-codegen-project</name>
-    <version>3.0.56</version>
+    <version>3.0.57-SNAPSHOT</version>
     <url>https://github.com/swagger-api/swagger-codegen</url>
     <scm>
         <connection>scm:git:git@github.com:swagger-api/swagger-codegen.git</connection>
@@ -1201,7 +1201,7 @@
     </repositories>
     <properties>
         <maven.compiler.release>8</maven.compiler.release>
-        <swagger-codegen-generators-version>1.0.49</swagger-codegen-generators-version>
+        <swagger-codegen-generators-version>1.0.50-SNAPSHOT</swagger-codegen-generators-version>
         <swagger-core-version>2.2.20</swagger-core-version>
         <swagger-core-version-v1>1.6.12</swagger-core-version-v1>
         <swagger-parser-version>2.1.19</swagger-parser-version>
diff --git a/samples/meta-codegen/pom.xml b/samples/meta-codegen/pom.xml
index 938a019573f..7b7ee5d0e7c 100644
--- a/samples/meta-codegen/pom.xml
+++ b/samples/meta-codegen/pom.xml
@@ -120,8 +120,8 @@
     </dependencies>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <swagger-codegen-version>3.0.56</swagger-codegen-version>
-        <swagger-codegen-generators-version>1.0.49</swagger-codegen-generators-version>
+        <swagger-codegen-version>3.0.57-SNAPSHOT</swagger-codegen-version>
+        <swagger-codegen-generators-version>1.0.50-SNAPSHOT</swagger-codegen-generators-version>
         <maven-plugin-version>1.0.0</maven-plugin-version>
         <junit-version>4.13.2</junit-version>
         <build-helper-maven-plugin>3.0.0</build-helper-maven-plugin>