diff --git a/requirements.txt b/requirements.txt
index e9b4f07..ef35092 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.12
 astroid==2.4.2
 atomicwrites==1.3.0
 attrs==19.1.0
-Babel==2.7.0
+Babel==2.9.1
 certifi==2019.3.9
 chardet==3.0.4
 doc8==0.8.0