diff --git a/requirements.txt b/requirements.txt
index 12be9fe..b996eff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ astropy==3.0.4
 atomicwrites==1.2.1
 attrs==18.2.0
 Automat==0.7.0
-Babel==2.6.0
+Babel==2.9.1
 backcall==0.1.0
 backports.shutil-get-terminal-size==1.0.0
 beautifulsoup4==4.6.3