diff --git a/tools/build.mjs b/tools/build.mjs
index 8f3b39a..c19008a 100644
--- a/tools/build.mjs
+++ b/tools/build.mjs
@@ -32,7 +32,7 @@ const build = await rollup({
       ],
       resolver
     }),
-    jsonPlugin(),
+    jsonPlugin({ exclude: /https\:\/\/jspm.dev\/.*\.json/}),
     babel({
      babelHelpers: 'bundled', 
      presets: [PresetEnv]