diff --git a/2021-Fall/assignment4/requirements.txt b/2021-Fall/assignment4/requirements.txt
index c310bc6..6e00ff2 100644
--- a/2021-Fall/assignment4/requirements.txt
+++ b/2021-Fall/assignment4/requirements.txt
@@ -86,7 +86,7 @@ tenacity==8.0.1
 tensorboard==2.6.0
 tensorboard-data-server==0.6.1
 tensorboard-plugin-wit==1.8.0
-tensorflow==2.6.0
+tensorflow==2.6.1
 tensorflow-estimator==2.6.0
 termcolor==1.1.0
 terminado==0.11.1