diff --git a/pom.xml b/pom.xml
index c277c571..9e5b30ec 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
     <artifactId>swagger-petstore</artifactId>
     <packaging>war</packaging>
     <name>swagger-petstore</name>
-    <version>1.0.19</version>
+    <version>1.0.20-SNAPSHOT</version>
     <prerequisites>
         <maven>2.2.0</maven>
     </prerequisites>
diff --git a/src/main/resources/openapi.yaml b/src/main/resources/openapi.yaml
index 12158ce1..f5271a59 100644
--- a/src/main/resources/openapi.yaml
+++ b/src/main/resources/openapi.yaml
@@ -11,7 +11,7 @@ info:
     Some useful links:
     - [The Pet Store repository](https://github.com/swagger-api/swagger-petstore)
     - [The source API definition for the Pet Store](https://github.com/swagger-api/swagger-petstore/blob/master/src/main/resources/openapi.yaml)
-  version: 1.0.19
+  version: 1.0.20-SNAPSHOT
   title: Swagger Petstore - OpenAPI 3.0
   termsOfService: 'http://swagger.io/terms/'
   contact: