diff --git a/docs/etc/requirements.txt b/docs/etc/requirements.txt
index 5b037c693..8011e8146 100644
--- a/docs/etc/requirements.txt
+++ b/docs/etc/requirements.txt
@@ -1,5 +1,5 @@
 alabaster==0.7.12
-Babel==2.8.0
+Babel==2.9.1
 certifi==2019.11.28
 chardet==3.0.4
 commonmark==0.9.1