diff --git a/src/index.ts b/src/index.ts
index acde6ed..536467e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -21,7 +21,7 @@ function VitePluginMarkdown<
 
   /** filter out files which aren't Markdown files */
   const filter = createFilter(
-    userOptions?.include || /\.md$/,
+    userOptions?.include || /\.md(\?.+)?$/,
     userOptions?.exclude || null,
   )