diff --git a/requirements.txt b/requirements.txt
index 3ed1fc1..a9ba924 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Babel==2.5.1
+Babel==2.9.1
 docopt==0.6.2
 et-xmlfile==1.0.1
 jdcal==1.3