diff --git a/package.json b/package.json
index c780ad6b..022ba7ca 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "jpeg-js": "^0.3.3",
     "jsdom": "^11.6.2",
     "node-fetch": "^1.7.3",
-    "parcel-bundler": "^1.5.1",
+    "parcel-bundler": "1.5.1",
     "pngjs": "^3.2.2",
     "preact": "^8.2.7",
     "puppeteer": "^0.13.0",