diff --git a/requirements.txt b/requirements.txt
index a20e669..e1a4c96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ asn1crypto==0.24.0
 astroid==1.6.1
 astropy==2.0.3
 attrs==17.4.0
-Babel==2.5.3
+Babel==2.9.1
 backports-abc==0.5
 backports.functools-lru-cache==1.4
 backports.shutil-get-terminal-size==1.0.0