diff --git a/requirements.txt b/requirements.txt
index 6e98172..9069b64 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ arrow==0.10.0
 asn1crypto==0.24.0
 astroid==1.4.9
 astropy==1.3.2
-Babel==2.5.3
+Babel==2.9.1
 backcall==0.1.0
 backports.shutil-get-terminal-size==1.0.0
 beautifulsoup4==4.6.0