diff --git a/README.md b/README.md
index a8e30ea..29aaf43 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,8 @@ jobs:
     steps:
       - uses: actions/checkout@v2
         with:
-          submodules: true
+          submodules: true  # Fetch Hugo themes
+          fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
 
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v2