diff --git a/AutoDiff/requirements.txt b/AutoDiff/requirements.txt
index dc07874..57599fa 100644
--- a/AutoDiff/requirements.txt
+++ b/AutoDiff/requirements.txt
@@ -30,7 +30,7 @@ scipy==1.3.2
 six==1.13.0
 tqdm==4.38.0
 twine==2.0.0
-urllib3==1.25.7
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 zipp==0.6.0