diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 3f3e5b2d5..d22e67dba 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -18,6 +18,9 @@ jobs:
           submodules: true  # Fetch Hugo themes (true OR recursive)
           fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
 
+      - name: Update Docsy Theme
+        run: git submodule update --init --recursive --remote themes/docsy
+
       - uses: actions/setup-node@v4
         with:
           node-version: 20
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..d580806d4
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "themes/docsy"]
+    path = themes/docsy
+    url = https://github.com/google/docsy.git