diff --git a/sphinx-doc/requirements_sphinx.txt b/sphinx-doc/requirements_sphinx.txt
index 7963fee6d2406e29fc91687d0970f68d414f1024..06112f0b52b337b4f616f6ca2555b4210359363b 100644
--- a/sphinx-doc/requirements_sphinx.txt
+++ b/sphinx-doc/requirements_sphinx.txt
@@ -1,8 +1,8 @@
 alabaster==0.7.12
 appdirs==1.4.4
 astor==0.8.1
+Babel==2.9.0
 attrs==20.3.0
-Babel==2.8.0
 black==20.8b1
 certifi==2020.11.8
 chardet==3.0.4