diff --git a/CI/gen_doc/requirements_doc.txt b/CI/gen_doc/requirements_doc.txt
index a23adedc..aabb6de3 100644
--- a/CI/gen_doc/requirements_doc.txt
+++ b/CI/gen_doc/requirements_doc.txt
@@ -1,5 +1,5 @@
 numpy
-mkdocs
+mkdocs<=1.5
 mkdocs-material
 mkdocs-awesome-pages-plugin
 mkdocs-mermaid2-plugin