diff --git a/agents/core-logic/requirements.txt b/agents/core-logic/requirements.txt
index 06d3fe4..92106db 100644
--- a/agents/core-logic/requirements.txt
+++ b/agents/core-logic/requirements.txt
@@ -10,7 +10,6 @@ google-cloud-secret-manager>=2.20.0
 # MCP toolset
 httpx>=0.27.0
 google-auth>=2.29.0
-google-auth-oauthlib>=1.2.0
 google-auth-httplib2>=0.2.0
 
 # Observability