diff --git a/requirements.txt b/requirements.txt
index e3f6f6c..c400297 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 alabaster==0.7.10
 apipkg==1.4
 attrs==17.4.0
-Babel==2.5.1
+Babel==2.9.1
 bandit==1.4.0
 certifi==2017.11.5
 chardet==3.0.4