diff --git a/requirements.txt b/requirements.txt
index 4360121..5fa1aff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ asn1crypto==0.23.0
 astroid==1.5.3
 astropy==2.0.2
 attrs==17.3.0
-Babel==2.5.0
+Babel==2.9.1
 backports.shutil-get-terminal-size==1.0.0
 beautifulsoup4==4.6.0
 bitarray==0.8.1