diff --git a/requirements.txt b/requirements.txt
index 535963d9..ab87d62e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 alabaster==0.7.6
 argh==0.26.1
-Babel==2.0
+Babel==2.9.1
 backports.ssl-match-hostname==3.4.0.2
 certifi==2015.4.28
 CommonMark==0.5.4