diff --git a/docs/requirements.txt b/docs/requirements.txt
index 66ea0382..93c8c4a7 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,6 +1,6 @@
 click==8.5.0
 colorama==0.4.6
-deepmerge==3.0.1
+deepmerge==4.0.0
 ghp-import==2.1.0
 griffe==2.4.1
 Jinja2==3.1.6