diff --git a/src/plugins/externalizeDeps.ts b/src/plugins/externalizeDeps.ts
index e475d89..0275c0b 100644
--- a/src/plugins/externalizeDeps.ts
+++ b/src/plugins/externalizeDeps.ts
@@ -33,7 +33,7 @@ export function externalizeDepsPlugin(options: ExternalOptions = {}): Plugin | n
       const defaultConfig = {
         build: {
           rollupOptions: {
-            external: [...new Set(deps)]
+            external: [...new Set(deps.map(d => new RegExp(`^${d}\/?.*`)))]
           }
         }
       }