diff --git a/pyproject.toml b/pyproject.toml
index 095a38cb0..cdf68e01f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -96,6 +96,7 @@ sagemaker = [
 ]
 
 a2a = [
+    "a2a-sdk>=0.2.16,<1.0.0",
     "a2a-sdk[sql]>=0.2.11,<1.0.0",
     "uvicorn>=0.34.2,<1.0.0",
     "httpx>=0.28.1,<1.0.0",
@@ -321,4 +322,4 @@ style = [
     ["instruction", ""],
     ["text", ""],
     ["disabled", "fg:#858585 italic"]
-]
\ No newline at end of file
+]