diff --git a/REQUIREMENTS.md b/REQUIREMENTS.md
index 5b5cdd6dd8e..ff13e49331e 100644
--- a/REQUIREMENTS.md
+++ b/REQUIREMENTS.md
@@ -36,7 +36,7 @@ for other platforms you may have to install some of them.
 - **Python >= 3.8** (for temporal framework, scripts, wxGUI, and ctypes interface)
   [https://www.python.org](https://www.python.org)
 - **MkDocs** with "Material" theme Python packages for the manual pages:
-  `pip install mkdocs mkdocs-material`
+  See `man/mkdocs/requirements.txt`.
 
 ## Optional packages