diff --git a/package.json b/package.json
index 1fe55d8..8c50463 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "npm-run-all": "^4.0.0",
     "npmpub": "^3.1.0",
     "nyc": "^11.0.0",
-    "pify": "^3.0.0",
+    "pify": "^4.0.0",
     "prettier": "^1.5.2",
     "remark-cli": "^5.0.0",
     "remark-preset-lint-itgalaxy": "^12.0.0",