diff --git a/requirements.txt b/requirements.txt
index b9227d0..29d8df1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,4 @@
-# a2a-pack is auto-installed by the deploy build.
-# These starter deps power the DeepAgents tool-calling example in agent.py.
-deepagents>=0.5.0
-langchain>=0.3
-langchain-openai>=0.2
-langgraph>=0.6
+# a2a-pack is provided by the deployment base image.
+# Runtime code uses only stdlib + pydantic from a2a-pack dependencies.
+pytest>=8.0
+pytest-asyncio>=0.23