diff --git a/.gitmodules b/.gitmodules
index 6027a24..9f1808e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,3 @@
-[submodule "vendor/bitbucket.org/victorykit/sphinx-victorykit-theme-assets"]
-	path = vendor/bitbucket.org/victorykit/sphinx-victorykit-theme-assets
-	url = git@bitbucket.org:victorykit/sphinx-victorykit-theme-assets.git
-    shallow = true
+[submodule "vendor/html-theme-ref"]
+	path = vendor/html-theme-ref
+	url = https://github.com/oxbqkwwxfrqccwtg/html-theme-ref.git
diff --git a/README.md b/README.md
index c314ed7..d83c11d 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ sh ./configure
 2. **Install dependencies (Microsoft PowerShell)**
 
 ```powershell
-git submodule update --init --remote && npm install
+git submodule update --init --remote --recursive && npm install
 ```
 
 3. **Preview and experiment**
diff --git a/vendor/bitbucket.org/victorykit/sphinx-victorykit-theme-assets b/vendor/bitbucket.org/victorykit/sphinx-victorykit-theme-assets
deleted file mode 160000
index 5d83764..0000000
--- a/vendor/bitbucket.org/victorykit/sphinx-victorykit-theme-assets
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 5d83764b8b3a65fafae5e3af0406ccf61ab6dd42
diff --git a/vendor/html-theme-ref b/vendor/html-theme-ref
new file mode 160000
index 0000000..46ad917
--- /dev/null
+++ b/vendor/html-theme-ref
@@ -0,0 +1 @@
+Subproject commit 46ad9174885551befff6c3788ba02b7dc8ccd4d9