diff --git a/requirements-zanhu.txt b/requirements-zanhu.txt
index 3e0ae43..0a8cead 100644
--- a/requirements-zanhu.txt
+++ b/requirements-zanhu.txt
@@ -11,7 +11,7 @@ atomicwrites==1.3.0
 attrs==19.1.0
 autobahn==19.9.3
 Automat==0.7.0
-Babel==2.7.0
+Babel==2.9.1
 backcall==0.1.0
 billiard==3.6.1.0
 black==19.3b0