diff --git a/grpc-google-common-protos/pom.xml b/grpc-google-common-protos/pom.xml
index 024cce23..23155036 100644
--- a/grpc-google-common-protos/pom.xml
+++ b/grpc-google-common-protos/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-common-protos</artifactId>
-  <version>2.2.0</version><!-- {x-version-update:proto-google-common-protos:current} -->
+  <version>2.2.1-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
   <name>grpc-google-common-protos</name>
   <description>GRPC library for grpc-google-common-protos</description>
   <parent>
     <groupId>com.google.api.grpc</groupId>
     <artifactId>google-common-protos-parent</artifactId>
-    <version>2.2.0</version><!-- {x-version-update:proto-google-common-protos:current} -->
+    <version>2.2.1-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 06a2f18d..443bfe5f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.api.grpc</groupId>
   <artifactId>google-common-protos-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.2.0</version><!-- {x-version-update:proto-google-common-protos:current} -->
+  <version>2.2.1-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
   <name>Google Common Protos Parent</name>
   <url>https://github.com/googleapis/java-iam</url>
   <description>
@@ -88,7 +88,7 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-common-protos</artifactId>
-        <version>2.2.0</version><!-- {x-version-update:proto-google-common-protos:current} -->
+        <version>2.2.1-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.guava</groupId>
diff --git a/proto-google-common-protos/pom.xml b/proto-google-common-protos/pom.xml
index 1d092f7a..c0f15a6b 100644
--- a/proto-google-common-protos/pom.xml
+++ b/proto-google-common-protos/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-common-protos</artifactId>
-  <version>2.2.0</version><!-- {x-version-update:proto-google-common-protos:current} -->
+  <version>2.2.1-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
   <name>proto-google-common-protos</name>
   <description>PROTO library for proto-google-common-protos</description>
   <parent>
     <groupId>com.google.api.grpc</groupId>
     <artifactId>google-common-protos-parent</artifactId>
-    <version>2.2.0</version><!-- {x-version-update:proto-google-common-protos:current} -->
+    <version>2.2.1-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/versions.txt b/versions.txt
index 2550643e..ebe619ba 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-proto-google-common-protos:2.2.0:2.2.0
+proto-google-common-protos:2.2.0:2.2.1-SNAPSHOT