diff --git a/requirements.txt b/requirements.txt
index 5f637d9..2febec2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.10
 alembic==0.8.9
 astroid==1.6.3
 attrs==17.4.0
-Babel==2.5.3
+Babel==2.9.1
 bcrypt==3.1.2
 beautifulsoup4==4.6.0
 bleach==1.5.0