diff --git a/package.json b/package.json
index ff4b959..4fec57d 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "gzip-size": "^5.1.1",
     "jest": "^24.9.0",
     "pretty-bytes": "^5.3.0",
-    "rollup": "^1.20.3",
+    "rollup": "1.20.3",
     "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-json": "^4.0.0",