diff --git a/api-common-java/build.gradle b/api-common-java/build.gradle
index 802c61625a..40f78f8516 100644
--- a/api-common-java/build.gradle
+++ b/api-common-java/build.gradle
@@ -26,7 +26,7 @@ apply plugin: 'io.github.gradle-nexus.publish-plugin'
 group = "com.google.api"
 archivesBaseName = "api-common"
 
-project.version = "2.2.0" // {x-version-update:api-common:current}
+project.version = "2.2.1-SNAPSHOT" // {x-version-update:api-common:current}
 
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
diff --git a/api-common-java/versions.txt b/api-common-java/versions.txt
index f37ce54bba..90e9abb030 100644
--- a/api-common-java/versions.txt
+++ b/api-common-java/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-api-common:2.2.0:2.2.0
+api-common:2.2.0:2.2.1-SNAPSHOT