diff --git a/requirements.txt b/requirements.txt
index 5c35069b..be6c04cc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Babel==2.3.4
+Babel==2.9.1
 chardet==3.0.4
 decorator==4.0.10
 docutils==0.12