diff --git a/requirements.txt b/requirements.txt
index af4bf83..e02c503 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 asn1crypto==0.24.0
-Babel==2.6.0
+Babel==2.9.1
 backcall==0.1.0
 bleach==3.0.2
 blinker==1.4