diff --git a/requirements.txt b/requirements.txt
index 7054981..bf947e7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.10
 appdirs==1.4.0
 astroid==1.4.9
 atari-py==0.0.21
-Babel==2.4.0
+Babel==2.9.1
 backports.functools-lru-cache==1.3
 ConfigArgParse==0.10.0
 configparser==3.5.0