diff --git a/docs/requirements.txt b/docs/requirements.txt
index b26dffee3..500a51318 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-mkdocs
-mkdocs-material
-pygments
-pymdown-extensions
+mkdocs>=1.0.4
+mkdocs-material>=4.4.0
+pygments>=2.4.2
+pymdown-extensions>=6.0