diff --git a/web_backend/requirements.txt b/web_backend/requirements.txt
index 0dd558a..4d1e229 100644
--- a/web_backend/requirements.txt
+++ b/web_backend/requirements.txt
@@ -7,7 +7,7 @@ astor==0.6.2
 astroid==1.6.3
 astropy==3.0.2
 attrs==18.1.0
-Babel==2.5.3
+Babel==2.9.1
 backcall==0.1.0
 backports.shutil-get-terminal-size==1.0.0
 beautifulsoup4==4.6.0