diff --git a/requirements.txt b/requirements.txt
index c584047..a600b1c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 alabaster==0.7.8
 asn1crypto==0.24.0
 astroid==1.6.5
-Babel==2.6.0
+Babel==2.9.1
 backports-abc==0.5
 backports.functools-lru-cache==1.5
 backports.shutil-get-terminal-size==1.0.0