diff --git a/requirements.txt b/requirements.txt
index 7c8437b..e8e823f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ attrs==19.1.0
 audioread==2.1.8
 autodoc==0.5.0
 autopep8==1.4.4
-Babel==2.7.0
+Babel==2.9.1
 backcall==0.1.0
 beautifulsoup4==4.8.0
 bleach==2.1.3