diff --git a/appengine/pom.xml b/appengine/pom.xml
index 82a53f46b..6fff828c5 100644
--- a/appengine/pom.xml
+++ b/appengine/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.auth</groupId>
     <artifactId>google-auth-library-parent</artifactId>
-    <version>1.9.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
+    <version>1.9.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/bom/pom.xml b/bom/pom.xml
index 69c0947b1..b10a66c3a 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.auth</groupId>
   <artifactId>google-auth-library-bom</artifactId>
-  <version>1.9.0</version><!-- {x-version-update:google-auth-library-bom:current} -->
+  <version>1.9.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-bom:current} -->
   <packaging>pom</packaging>
   <name>Google Auth Library for Java BOM</name>
   <description>
diff --git a/credentials/pom.xml b/credentials/pom.xml
index 14e671ad9..c1d4f46ff 100644
--- a/credentials/pom.xml
+++ b/credentials/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.auth</groupId>
     <artifactId>google-auth-library-parent</artifactId>
-    <version>1.9.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
+    <version>1.9.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/oauth2_http/pom.xml b/oauth2_http/pom.xml
index fc6293357..8aadf3e73 100644
--- a/oauth2_http/pom.xml
+++ b/oauth2_http/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.auth</groupId>
     <artifactId>google-auth-library-parent</artifactId>
-    <version>1.9.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
+    <version>1.9.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index 664e1eb08..50e3500ed 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.auth</groupId>
   <artifactId>google-auth-library-parent</artifactId>
-  <version>1.9.0</version><!-- {x-version-update:google-auth-library-parent:current} -->
+  <version>1.9.1-SNAPSHOT</version><!-- {x-version-update:google-auth-library-parent:current} -->
   <packaging>pom</packaging>
   <name>Google Auth Library for Java</name>
   <description>Client libraries providing authentication and
diff --git a/versions.txt b/versions.txt
index c024e0079..d8f0ea5fd 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,9 +1,9 @@
 # Format:
 # module:released-version:current-version
 
-google-auth-library:1.9.0:1.9.0
-google-auth-library-bom:1.9.0:1.9.0
-google-auth-library-parent:1.9.0:1.9.0
-google-auth-library-appengine:1.9.0:1.9.0
-google-auth-library-credentials:1.9.0:1.9.0
-google-auth-library-oauth2-http:1.9.0:1.9.0
+google-auth-library:1.9.0:1.9.1-SNAPSHOT
+google-auth-library-bom:1.9.0:1.9.1-SNAPSHOT
+google-auth-library-parent:1.9.0:1.9.1-SNAPSHOT
+google-auth-library-appengine:1.9.0:1.9.1-SNAPSHOT
+google-auth-library-credentials:1.9.0:1.9.1-SNAPSHOT
+google-auth-library-oauth2-http:1.9.0:1.9.1-SNAPSHOT