diff --git a/AutoDiff/requirements.txt b/AutoDiff/requirements.txt
index dc07874..0b7ee2a 100644
--- a/AutoDiff/requirements.txt
+++ b/AutoDiff/requirements.txt
@@ -1,6 +1,6 @@
 atomicwrites==1.3.0
 attrs==19.3.0
-bleach==3.1.0
+bleach==3.1.2
 certifi==2019.9.11
 chardet==3.0.4
 coverage==4.5.4