diff --git a/package.json b/package.json
index 886e526..e4f5084 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "rollup": "^0.34.1",
+    "rollup": "0.34.9",
     "rollup-plugin-typescript": "^0.7.7",
     "rollup-watch": "^2.5.0",
     "typescript": "^1.8.10"