diff --git a/samples/durable-task-sdks/java/function-chaining/build.gradle b/samples/durable-task-sdks/java/function-chaining/build.gradle
index 9d22e6e..1484438 100644
--- a/samples/durable-task-sdks/java/function-chaining/build.gradle
+++ b/samples/durable-task-sdks/java/function-chaining/build.gradle
@@ -10,7 +10,7 @@ java {
     sourceCompatibility = JavaVersion.VERSION_21
     targetCompatibility = JavaVersion.VERSION_21
 }
-def grpcVersion = '1.78.0'
+def grpcVersion = '1.80.0'
 base { archivesName = 'durabletask-samples' }
 
 repositories {