diff --git a/sphinx/requirements.txt b/sphinx/requirements.txt
index 1f9f1e6..c1c984a 100644
--- a/sphinx/requirements.txt
+++ b/sphinx/requirements.txt
@@ -1,5 +1,5 @@
 alabaster==0.7.12
-Babel==2.9.0
+Babel==2.9.1
 blis==0.4.1
 catalogue==1.0.0
 certifi==2020.12.5