diff --git a/package.json b/package.json
index 0d407ae..c429786 100644
--- a/package.json
+++ b/package.json
@@ -58,8 +58,10 @@
     "rollup": "^0.29.1",
     "rollup-plugin-buble": "^0.6.0",
     "rollup-plugin-commonjs": "^3.0.0",
+    "rollup-plugin-json": "^2.0.0",
     "rollup-plugin-node-resolve": "^1.5.0",
     "rollup-plugin-replace": "^1.0.1",
+    "rollup-plugin-string": "^1.0.1",
     "sander": "^0.5.0",
     "source-map": "^0.5.3",
     "sourcemap-codec": "^1.2.1",