diff --git a/bdsg/docs/requirements.txt b/bdsg/docs/requirements.txt
index 1986c992..0375e0ca 100644
--- a/bdsg/docs/requirements.txt
+++ b/bdsg/docs/requirements.txt
@@ -1,5 +1,5 @@
 alabaster==0.7.12
-Babel==2.8.0
+Babel==2.9.1
 breathe==4.34.0
 certifi==2020.6.20
 chardet==3.0.4