diff --git a/package.json b/package.json
index 94b27a2..3b0a158 100644
--- a/package.json
+++ b/package.json
@@ -54,6 +54,7 @@
     "@quartz-community/content-meta": "^0.1.0",
     "@quartz-community/content-page": "^0.1.0",
     "@quartz-community/crawl-links": "^0.1.0",
+    "@quartz-themes/core": "^1.0.0",
     "@quartz-community/created-modified-date": "^0.1.0",
     "@quartz-community/darkmode": "^0.1.0",
     "@quartz-community/description": "^0.1.0",
diff --git a/quartz/plugins/loader/gitLoader.ts b/quartz/plugins/loader/gitLoader.ts
index 408a06f..3031b03 100644
--- a/quartz/plugins/loader/gitLoader.ts
+++ b/quartz/plugins/loader/gitLoader.ts
@@ -809,7 +809,7 @@ const SINGLETON_EXTERNALS = ["preact", "@jackyzha0/quartz", "vfile", "unified"]
  * Scope prefixes whose packages are always treated as shared externals.
  * Plugins under these scopes are co-installed siblings, not bundled deps.
  */
-const SHARED_SCOPES = ["@quartz-community/"]
+const SHARED_SCOPES = ["@quartz-community/", "@quartz-themes/"]
 
 /**
  * Build the full shared externals list by combining: