diff --git a/package.json b/package.json
index 41374e0..e79f9aa 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "mocha": "^3.4.1",
     "phantomjs-prebuilt": "^2.1.14",
     "rimraf": "^2.6.1",
-    "rollup": "^0.41.6",
+    "rollup": "^0.42.0",
     "rollup-plugin-buble": "^0.15.0",
     "rollup-plugin-commonjs": "^8.0.2",
     "rollup-plugin-json": "^2.1.1",