diff --git a/requirements.txt b/requirements.txt
index d333cdd..2d5b6f3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 alabaster==0.7.12
-Babel==2.8.0
+Babel==2.9.1
 backports.functools-lru-cache==1.4
 backports.shutil-get-terminal-size==1.0.0
 bz2file==0.98