diff --git a/requirements.txt b/requirements.txt
index 9f4e2bf..9456065 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ numpy
 pandas
 pyPDF2
 reportlab
-pyautogen[retrievechat]
+autogen-agentchat[retrievechat]~=0.2.0
 
 # packaging
 setuptools>=41.4.0