diff --git a/docs/requirements.txt b/docs/requirements.txt
index bc636c229..ecdfe7d99 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -5,6 +5,7 @@ mkdocs-git-revision-date-localized-plugin
 mkdocs-htmlproofer-plugin
 mkdocs-material[imaging]
 mkdocs-redirects
+mkdocs-unused-files
 mdx_truly_sane_lists
 
 # Requires:
diff --git a/mkdocs.yml b/mkdocs.yml
index e8e6f94a3..6c97173e2 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -99,6 +99,10 @@ nav:
   - Discuss ↗: https://github.com/emmercm/igir/discussions" target="_blank
 
 plugins:
+  - unused_files:
+      file_types:
+        - md
+      strict: true
   - search:
       lang: en
   - exclude-search: