diff --git a/requirements.txt b/requirements.txt
index 3e9dbf7..0bee79d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 alabaster==0.7.12
-Babel==2.8.0
+Babel==2.9.1
 certifi==2019.11.28
 chardet==3.0.4
 docutils==0.16