diff --git a/requirements.txt b/requirements.txt
index 07c911b..45f62cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 absl-py==0.7.1
 alabaster==0.7.12
 astor==0.8.0
-Babel==2.7.0
+Babel==2.9.1
 certifi==2019.3.9
 chardet==3.0.4
 cycler==0.10.0