diff --git a/app-gradle-plugin/build.gradle.kts b/app-gradle-plugin/build.gradle.kts
index 7931e6687..62a54138a 100644
--- a/app-gradle-plugin/build.gradle.kts
+++ b/app-gradle-plugin/build.gradle.kts
@@ -20,7 +20,7 @@ import org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
  */
 
 group = "com.google.cloud.tools"
-version = "2.8.7" // {x-version-update:app-gradle-plugin:current}
+version = "2.8.8-SNAPSHOT" // {x-version-update:app-gradle-plugin:current}
 
 plugins {
   id("java")
@@ -49,7 +49,7 @@ java {
 dependencies {
   implementation(localGroovy())
   implementation(gradleApi())
-  api("com.google.cloud.tools:appengine-plugins-core:0.13.7") // {x-version-update:appengine-plugins-core:current}
+  api("com.google.cloud.tools:appengine-plugins-core:0.13.8-SNAPSHOT") // {x-version-update:appengine-plugins-core:current}
 
   implementation("org.apache.commons:commons-lang3:3.18.0")
   implementation("commons-io:commons-io:2.20.0")
diff --git a/app-maven-plugin/pom.xml b/app-maven-plugin/pom.xml
index dacc5e57f..a28b58881 100644
--- a/app-maven-plugin/pom.xml
+++ b/app-maven-plugin/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>com.google.cloud.tools</groupId>
   <artifactId>appengine-maven-plugin</artifactId>
-  <version>2.8.7</version><!-- {x-version-update:app-maven-plugin:current} -->
+  <version>2.8.8-SNAPSHOT</version><!-- {x-version-update:app-maven-plugin:current} -->
   <packaging>maven-plugin</packaging>
 
   <name>App Engine Maven Plugin</name>
@@ -92,7 +92,7 @@
     <dependency>
       <groupId>com.google.cloud.tools</groupId>
       <artifactId>appengine-plugins-core</artifactId>
-      <version>0.13.7</version><!-- {x-version-update:appengine-plugins-core:current} -->
+      <version>0.13.8-SNAPSHOT</version><!-- {x-version-update:appengine-plugins-core:current} -->
     </dependency>
 
     <dependency>
diff --git a/appengine-plugins-core/pom.xml b/appengine-plugins-core/pom.xml
index d1f8da323..01dd161eb 100644
--- a/appengine-plugins-core/pom.xml
+++ b/appengine-plugins-core/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>com.google.cloud.tools</groupId>
   <artifactId>appengine-plugins-core</artifactId>
-  <version>0.13.7</version><!-- {x-version-update:appengine-plugins-core:current} -->
+  <version>0.13.8-SNAPSHOT</version><!-- {x-version-update:appengine-plugins-core:current} -->
 
   <name>App Engine Plugins Core Library</name>
   <description>
diff --git a/pom.xml b/pom.xml
index 4e45697dd..320fcae43 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <dependency>
       <groupId>com.google.cloud.tools</groupId>
       <artifactId>appengine-plugins-core</artifactId>
-      <version>0.13.7</version><!-- {x-version-update:appengine-plugins-core:current} -->
+      <version>0.13.8-SNAPSHOT</version><!-- {x-version-update:appengine-plugins-core:current} -->
     </dependency>
   </dependencies>
   <!-- Do not deploy the aggregator POM -->
diff --git a/versions.txt b/versions.txt
index 2b783d718..886f3a989 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-app-maven-plugin:2.8.7:2.8.7
-app-gradle-plugin:2.8.7:2.8.7
-appengine-plugins-core:0.13.7:0.13.7
+app-maven-plugin:2.8.7:2.8.8-SNAPSHOT
+app-gradle-plugin:2.8.7:2.8.8-SNAPSHOT
+appengine-plugins-core:0.13.7:0.13.8-SNAPSHOT