diff --git a/impl/pom.xml b/impl/pom.xml
index 177010ff9..b17bf94c7 100644
--- a/impl/pom.xml
+++ b/impl/pom.xml
@@ -17,7 +17,7 @@
         <version.com.cronutils>9.2.1</version.com.cronutils>
         <version.docker.java>3.7.1</version.docker.java>
         <version.org.graalvm.polyglot>25.4.4.1.1</version.org.graalvm.polyglot>
-        <version.org.a2aproject.sdk>1.3.2.Final</version.org.a2aproject.sdk>
+        <version.org.a2aproject.sdk>1.4.0.Final</version.org.a2aproject.sdk>
         <version.com.google.code.gson>2.14.0</version.com.google.code.gson>
     </properties>
     <dependencyManagement>