diff --git a/dev_requirements.txt b/dev_requirements.txt
index d84528d..8f59217 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.12
 argh==0.26.2
 attrs==20.2.0
 Automat==0.6.0
-Babel==2.8.0
+Babel==2.9.1
 certifi==2019.11.28
 chardet==3.0.4
 colorama==0.3.9