diff --git a/.gitignore b/.gitignore
index f793e55..181790c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,6 @@
 /public/schema.js
 node_modules
 npm-debug.log
+/.nyc_output
 /coverage
 /cache/data.json
diff --git a/package-lock.json b/package-lock.json
index 8419b57..b01362a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1239,6 +1239,67 @@
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+        }
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+      "resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.2.tgz",
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/aggregate-error/-/aggregate-error-3.1.0.tgz",
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@@ -1573,12 +1631,27 @@
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@@ -2871,6 +2896,35 @@
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@@ -3015,6 +3063,12 @@
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+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-3.0.3.tgz",
+      "integrity": "sha512-AvHcyZ5JnSfq3ioSyjrBkH9yW4m7Ayk8/9My/DD9onKeu/94fwrMocemO2QAJFAlnnDN+ZDS+ZjAR5ua1/PV/Q==",
+      "dev": true,
+      "requires": {
+        "imurmurhash": "^0.1.4",
+        "is-typedarray": "^1.0.0",
+        "signal-exit": "^3.0.2",
+        "typedarray-to-buffer": "^3.1.5"
+      }
+    },
     "xtend": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
diff --git a/package.json b/package.json
index e85f1b3..56a0553 100644
--- a/package.json
+++ b/package.json
@@ -33,12 +33,11 @@
     "start": "node lib/server",
     "watch": "babel scripts/watch.js | node",
     "test": "npm run lint && npm run check && npm run test:only",
+    "test:coverage": "nyc --report-dir coverage --reporter=lcov  --reporter=text mocha $npm_package_options_mocha",
     "test:only": "mocha $npm_package_options_mocha",
     "lint": "eslint src handler",
     "lint:fix": "eslint --fix src handler",
     "check": "flow check",
-    "cover": "babel-node node_modules/.bin/isparta cover --root src --report html node_modules/.bin/_mocha -- $npm_package_options_mocha",
-    "coveralls": "babel-node node_modules/.bin/isparta cover --root src --report lcovonly node_modules/.bin/_mocha -- $npm_package_options_mocha && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
     "build": "rimraf lib && babel src --ignore __tests__,public --out-dir lib/ && npm run build:lambda",
     "build:lambda": "NODE_ENV=development netlify-lambda build handler",
     "download": "babel-node scripts/download.js cache/data.json",
@@ -69,15 +68,14 @@
     "babel-preset-env": "^1.7.0",
     "babel-register": "^6.26.0",
     "chai": "^4.2.0",
-    "coveralls": "^3.0.4",
     "eslint": "^5.16.0",
     "eslint-plugin-babel": "5.3.0",
     "eslint-plugin-prettier": "^3.1.0",
     "flow-bin": "^0.69.0",
     "isomorphic-fetch": "2.2.1",
-    "isparta": "^4.1.1",
     "mocha": "^6.1.4",
     "netlify-lambda": "^1.6.3",
+    "nyc": "^15.1.0",
     "prettier": "^1.18.2",
     "sane": "^4.1.0"
   }