diff --git a/requirements.txt b/requirements.txt
index aaf4370..d548460 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 alabaster==0.7.12
-Babel==2.7.0
+Babel==2.9.1
 certifi==2019.6.16
 chardet==3.0.4
 commonmark==0.9.0