diff --git a/requirements-dev.txt b/requirements-dev.txt
index 40046ab..c9f0987 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@ anyjson==0.3.3
 asn1crypto==1.0.1
 astroid==1.6.6
 autopep8==1.4.4
-Babel==2.7.0
+Babel==2.9.1
 backports.functools-lru-cache==1.5
 backports.ssl-match-hostname==3.7.0.1
 billiard==3.3.0.23