diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 1772e6fa2..a1961ec9a 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "1.0.0"
+    ".": "1.1.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c8ce38d1c..8fbed5fc8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,28 @@
 # Changelog
 
+## [1.1.0](https://github.com/google/adk-java/compare/v1.0.0...v1.1.0) (2026-04-08)
+
+
+### Features
+
+* Add ChatCompletionsRequest object ([88eb0f5](https://github.com/google/adk-java/commit/88eb0f523c14266840ffc4b3d9ed827c9cdb1510))
+* Add ChatCompletionsResponse object ([55becb8](https://github.com/google/adk-java/commit/55becb81b6dcc15a9a82ec842a0096132813ae64))
+* Add ChatCompletionsResponse to LlmResponse conversion ([ec88c64](https://github.com/google/adk-java/commit/ec88c64d311946c1d427c4374be75d6163160478))
+* add README for ADK LangChain4j integration library ([f861ef9](https://github.com/google/adk-java/commit/f861ef9c0d5c6a5ef27e7be1d8ac27a399ba6fad))
+* add support for Gemma models in LlmRegistry ([9d6cc80](https://github.com/google/adk-java/commit/9d6cc80660d81fc217d058b7c8edb1ff906e2c30))
+* add transcription in event ([cb9d2e3](https://github.com/google/adk-java/commit/cb9d2e3e9225c550fd1f1a1445cebe569d30a20a))
+* Implement Trace management, add HITL support ([7407e37](https://github.com/google/adk-java/commit/7407e37a043f7b25a66663eb04a6bafbef620583))
+* Support Sub-agent Escalation event in Parallel Agent (Issue [#561](https://github.com/google/adk-java/issues/561)) ([88c8b0e](https://github.com/google/adk-java/commit/88c8b0e5a4863fa623fa17ff616d13570b60c4d0))
+* Update event IDs in BaseLlmFlow's post processing section ([d0e1085](https://github.com/google/adk-java/commit/d0e108510487d97d186052caa164649e1c90f176))
+
+
+### Bug Fixes
+
+* Fix A2A protocol chunk streaming and task completion states ([c95f669](https://github.com/google/adk-java/commit/c95f669bb6fbadbf07d62a8ff8a3e533e17032f4))
+* Fix critical race condition in ADK Runner ([51f4d1f](https://github.com/google/adk-java/commit/51f4d1f9a4d4d67a92f4a97989e5bd1ab24910e1))
+* Fix critical race condition in ADK Runner ([3091156](https://github.com/google/adk-java/commit/30911560ff2f928e40f6de9426c7c8295b16bacb))
+* Fix race condition and stale session in ADK Runner ([7964e93](https://github.com/google/adk-java/commit/7964e93dc12c3d24079facfd5d64ed913ec082aa))
+
 ## [1.0.0](https://github.com/google/adk-java/compare/v1.0.0-rc.1...v1.0.0) (2026-03-30)
 
 
diff --git a/README.md b/README.md
index 58307be2b..a2337bf55 100644
--- a/README.md
+++ b/README.md
@@ -50,13 +50,13 @@ If you're using Maven, add the following to your dependencies:
 <dependency>
   <groupId>com.google.adk</groupId>
   <artifactId>google-adk</artifactId>
-  <version>1.0.0</version>
+  <version>1.1.0</version>
 </dependency>
 <!-- Dev UI -->
 <dependency>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-dev</artifactId>
-    <version>1.0.0</version>
+    <version>1.1.0</version>
 </dependency>
 ```
 
diff --git a/a2a/pom.xml b/a2a/pom.xml
index 38d1edafa..a756ac22f 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</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 917e23a0c..264c20eee 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.1.0</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 51815af03..a970f7996 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/contrib/samples/a2a_basic/pom.xml b/contrib/samples/a2a_basic/pom.xml
index 6ed3d6475..e497a2e0d 100644
--- a/contrib/samples/a2a_basic/pom.xml
+++ b/contrib/samples/a2a_basic/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-samples</artifactId>
-    <version>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/contrib/samples/a2a_server/pom.xml b/contrib/samples/a2a_server/pom.xml
index 496106315..b1ef659b7 100644
--- a/contrib/samples/a2a_server/pom.xml
+++ b/contrib/samples/a2a_server/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-samples</artifactId>
-    <version>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/contrib/samples/configagent/pom.xml b/contrib/samples/configagent/pom.xml
index c83cc9e2b..f4a536eca 100644
--- a/contrib/samples/configagent/pom.xml
+++ b/contrib/samples/configagent/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-samples</artifactId>
-        <version>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/contrib/samples/helloworld/pom.xml b/contrib/samples/helloworld/pom.xml
index 39ec6f736..61dc3b5b7 100644
--- a/contrib/samples/helloworld/pom.xml
+++ b/contrib/samples/helloworld/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-samples</artifactId>
-        <version>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/contrib/samples/mcpfilesystem/pom.xml b/contrib/samples/mcpfilesystem/pom.xml
index 15c05eb7e..a1d7cac53 100644
--- a/contrib/samples/mcpfilesystem/pom.xml
+++ b/contrib/samples/mcpfilesystem/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../..</relativePath>
     </parent>
 
diff --git a/contrib/samples/pom.xml b/contrib/samples/pom.xml
index ab84e33ee..affd6d9c5 100644
--- a/contrib/samples/pom.xml
+++ b/contrib/samples/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>../..</relativePath>
   </parent>
 
diff --git a/contrib/spring-ai/pom.xml b/contrib/spring-ai/pom.xml
index eb7abde49..057e1c9ad 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/core/pom.xml b/core/pom.xml
index 5670d425f..9430eef4e 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk</artifactId>
diff --git a/core/src/main/java/com/google/adk/Version.java b/core/src/main/java/com/google/adk/Version.java
index b32afce6f..4c5a6b1a9 100644
--- a/core/src/main/java/com/google/adk/Version.java
+++ b/core/src/main/java/com/google/adk/Version.java
@@ -22,7 +22,7 @@
  */
 public final class Version {
   // Don't touch this, release-please should keep it up to date.
-  public static final String JAVA_ADK_VERSION = "1.0.0"; // x-release-please-released-version
+  public static final String JAVA_ADK_VERSION = "1.1.0"; // x-release-please-released-version
 
   private Version() {}
 }
diff --git a/dev/pom.xml b/dev/pom.xml
index 7f246d2f6..c094c2561 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk-dev</artifactId>
diff --git a/maven_plugin/examples/custom_tools/pom.xml b/maven_plugin/examples/custom_tools/pom.xml
index 9421f9bee..68978c6be 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</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 514ce45a3..f3c7bfd97 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</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 8cc365dfd..071959597 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/pom.xml b/pom.xml
index b80734b2c..fcf037d2e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
 
   <groupId>com.google.adk</groupId>
   <artifactId>google-adk-parent</artifactId>
-  <version>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+  <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
   <packaging>pom</packaging>
 
   <name>Google Agent Development Kit Maven Parent POM</name>
diff --git a/tutorials/city-time-weather/pom.xml b/tutorials/city-time-weather/pom.xml
index 8d1cb7976..7b668bb71 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</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 0c3dc454b..c7c46bbd9 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>1.0.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.1.0</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>