diff --git a/packages/core/package.json b/packages/core/package.json
index 8cd6303..00f83f1 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -10,7 +10,7 @@
   "license": "ISC",
   "devDependencies": {
     "ava": "^0.20.0",
-    "codecov": "^2.2.0",
+    "codecov": "^3.6.5",
     "nyc": "^14.1.1",
     "sinon": "^5.0.7"
   },