diff --git a/package.json b/package.json
index eedf4e3504..fec3b935b5 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.3",
     "babel-eslint": "=8.0.3 || ^8.2.6",
-    "babel-plugin-istanbul": "^4.1.6",
+    "babel-plugin-istanbul": "^5.0.1",
     "babel-plugin-module-resolver": "^2.7.1",
     "babel-preset-es2015-argon": "latest",
     "babel-preset-flow": "^6.23.0",
@@ -86,7 +86,7 @@
     "lodash.isarray": "^4.0.0",
     "mocha": "^3.5.3",
     "npm-which": "^3.0.1",
-    "nyc": "^11.9.0",
+    "nyc": "^13.0.1",
     "redux": "^3.7.2",
     "rimraf": "^2.7.1",
     "safe-publish-latest": "^1.1.4",