diff --git a/dev-requirements.txt b/dev-requirements.txt
index 967cea2..f871755 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -5,7 +5,7 @@ apturl==0.5.2
 asn1crypto==0.24.0
 attrs==17.4.0
 autobahn==18.4.1
-Babel==2.5.3
+Babel==2.9.1
 beautifulsoup4==4.6.0
 blinker==1.3
 boto==2.48.0