diff --git a/requirements-docs.txt b/requirements-docs.txt
index 91e37f497..e03add5fa 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -1,5 +1,5 @@
 alabaster==0.7.12
-Babel==2.7.0
+Babel==2.9.1
 imagesize==1.1.0
 Jinja2==2.10.3
 MarkupSafe==1.1.1