diff --git a/requirements_dev.txt b/requirements_dev.txt
index 23f65b9..913fe46 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,6 +1,6 @@
 alabaster==0.7.8
 argh==0.26.2
-Babel==2.3.4
+Babel==2.15.0
 bumpversion==0.5.3
 cffi==1.7.0
 click==6.6