diff --git a/docs/tools/requirements.txt b/docs/tools/requirements.txt
index 4106100bfa3b..96bd28ff5662 100644
--- a/docs/tools/requirements.txt
+++ b/docs/tools/requirements.txt
@@ -1,4 +1,4 @@
-Babel==2.8.0
+Babel==2.9.1
 backports-abc==0.5
 backports.functools-lru-cache==1.6.1
 beautifulsoup4==4.9.1