diff --git a/backend/requirements.txt b/backend/requirements.txt
index 1be27e6b..a92b992d 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,10 +1,10 @@
 # Backend requirements for FastAPI TradingAgents API
 
 # Core Framework
-fastapi==0.104.1
-uvicorn[standard]==0.24.0
-pydantic==2.5.0
-pydantic-settings==2.1.0
+fastapi>=0.104.0
+uvicorn[standard]>=0.24.0
+pydantic>=2.9.0
+pydantic-settings>=2.5.0
 
 # CORS and middleware
 python-multipart==0.0.6