diff --git a/requirements.txt b/requirements.txt
index 9a8a4ca47776e08c37d9568ab50fa1f267d73198..ea9be48d58e16f32015f0295606fd4a260a83fad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 mkdocs
-mkdocs-material
+mkdocs-material<5.0