diff --git a/a2a/pom.xml b/a2a/pom.xml
index 5ced95a2a..fda24cac8 100644
--- a/a2a/pom.xml
+++ b/a2a/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk-a2a</artifactId>
diff --git a/contrib/firestore-session-service/pom.xml b/contrib/firestore-session-service/pom.xml
index 3b63bdd15..fe4e5f6a5 100644
--- a/contrib/firestore-session-service/pom.xml
+++ b/contrib/firestore-session-service/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/contrib/langchain4j/pom.xml b/contrib/langchain4j/pom.xml
index e58696cbe..4cf7dba36 100644
--- a/contrib/langchain4j/pom.xml
+++ b/contrib/langchain4j/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/contrib/planners/pom.xml b/contrib/planners/pom.xml
index 95a2c62c3..860344d55 100644
--- a/contrib/planners/pom.xml
+++ b/contrib/planners/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/contrib/spring-ai/pom.xml b/contrib/spring-ai/pom.xml
index 0b38c7b71..11335974f 100644
--- a/contrib/spring-ai/pom.xml
+++ b/contrib/spring-ai/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/core/pom.xml b/core/pom.xml
index f9059650b..057ecdc6c 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk</artifactId>
diff --git a/dev/pom.xml b/dev/pom.xml
index 4b2a33d9e..3ebf94971 100644
--- a/dev/pom.xml
+++ b/dev/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk-dev</artifactId>
diff --git a/examples/a2a_basic/pom.xml b/examples/a2a_basic/pom.xml
index fc0c8f166..bfa58507b 100644
--- a/examples/a2a_basic/pom.xml
+++ b/examples/a2a_basic/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-examples</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/examples/a2a_server/pom.xml b/examples/a2a_server/pom.xml
index d12930682..dc320798b 100644
--- a/examples/a2a_server/pom.xml
+++ b/examples/a2a_server/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-examples</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/examples/configagent/pom.xml b/examples/configagent/pom.xml
index e68ab5def..ff247d39c 100644
--- a/examples/configagent/pom.xml
+++ b/examples/configagent/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-examples</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/examples/contextcaching/pom.xml b/examples/contextcaching/pom.xml
index 40f1bb8fe..d04fc46ce 100644
--- a/examples/contextcaching/pom.xml
+++ b/examples/contextcaching/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-examples</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/examples/helloworld/pom.xml b/examples/helloworld/pom.xml
index 0eb104b80..0240542bf 100644
--- a/examples/helloworld/pom.xml
+++ b/examples/helloworld/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-examples</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/examples/mcpfilesystem/pom.xml b/examples/mcpfilesystem/pom.xml
index 45a6c5ede..e926e8d1d 100644
--- a/examples/mcpfilesystem/pom.xml
+++ b/examples/mcpfilesystem/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-examples</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/examples/pom.xml b/examples/pom.xml
index b52d70446..55ac68b06 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/maven_plugin/examples/custom_tools/pom.xml b/maven_plugin/examples/custom_tools/pom.xml
index d82dfc39d..c7f53cdc3 100644
--- a/maven_plugin/examples/custom_tools/pom.xml
+++ b/maven_plugin/examples/custom_tools/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>com.example</groupId>
     <artifactId>custom-tools-example</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <packaging>jar</packaging>
 
     <name>ADK Custom Tools Example</name>
diff --git a/maven_plugin/examples/simple-agent/pom.xml b/maven_plugin/examples/simple-agent/pom.xml
index e379ac080..934d3c4ac 100644
--- a/maven_plugin/examples/simple-agent/pom.xml
+++ b/maven_plugin/examples/simple-agent/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>com.example</groupId>
     <artifactId>simple-adk-agent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <packaging>jar</packaging>
 
     <name>Simple ADK Agent Example</name>
diff --git a/maven_plugin/pom.xml b/maven_plugin/pom.xml
index 9fd71e925..395eca9a3 100644
--- a/maven_plugin/pom.xml
+++ b/maven_plugin/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/pom.xml b/pom.xml
index afb900088..234d99778 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
 
   <groupId>com.google.adk</groupId>
   <artifactId>google-adk-parent</artifactId>
-  <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+  <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
   <packaging>pom</packaging>
 
   <name>Google Agent Development Kit Maven Parent POM</name>
diff --git a/tokt/pom.xml b/tokt/pom.xml
index f312bcdf5..d94b2536a 100644
--- a/tokt/pom.xml
+++ b/tokt/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk-tokt</artifactId>
diff --git a/tutorials/city-time-weather/pom.xml b/tutorials/city-time-weather/pom.xml
index 631a19b3f..cf302db0c 100644
--- a/tutorials/city-time-weather/pom.xml
+++ b/tutorials/city-time-weather/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/tutorials/live-audio-single-agent/pom.xml b/tutorials/live-audio-single-agent/pom.xml
index 1ea0b76f1..a26d32d61 100644
--- a/tutorials/live-audio-single-agent/pom.xml
+++ b/tutorials/live-audio-single-agent/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.13.0</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.13.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>