diff --git a/agents/core-logic/requirements.txt b/agents/core-logic/requirements.txt
index 1ea91ed..3f44ad1 100644
--- a/agents/core-logic/requirements.txt
+++ b/agents/core-logic/requirements.txt
@@ -4,10 +4,9 @@
 google-adk>=2.0.0
 google-cloud-aiplatform[adk,agent_engines]>=1.112.0
 
-# RAG Engine
-vertexai>=1.71.0
+# vertexai is bundled inside google-cloud-aiplatform >= 1.71 — no separate pin needed
 
-# Secret Manager integration (requires ADK >= 1.29)
+# Secret Manager integration
 google-cloud-secret-manager>=2.20.0
 
 # MCP toolset