diff --git a/requirements.txt b/requirements.txt
index 950df89..d71925c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Babel==2.4.0
+Babel==2.9.1
 backports-abc==0.5
 bleach==2.0.0
 certifi==2017.11.5