diff --git a/sub2/backend/requirements.txt b/sub2/backend/requirements.txt
index 0a4688b..4721aa6 100644
--- a/sub2/backend/requirements.txt
+++ b/sub2/backend/requirements.txt
@@ -1,5 +1,5 @@
 attrs==19.3.0
-Babel==2.6.0
+Babel==2.9.1
 backcall==0.1.0
 backports.os==0.1.1
 backports.shutil-get-terminal-size==1.0.0