diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b21e0239..dd03c2dd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -61,9 +61,12 @@ jobs:
       - name: Run tests and measure code coverage
         run: npm run testonly:cover
 
-      - name: Upload coverage to Coveralls
+      - name: Upload coverage to Codecov
         if: ${{ always() }}
-        run: cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
+        uses: codecov/codecov-action@v1
+        with:
+          file: ./coverage/coverage-final.json
+          fail_ci_if_error: true
 
   test:
     name: Run tests on Node v${{ matrix.node_version_to_setup }}
diff --git a/.nycrc.yml b/.nycrc.yml
index fde5e5a0..5110ba7e 100644
--- a/.nycrc.yml
+++ b/.nycrc.yml
@@ -1,8 +1,10 @@
+all: true
 include:
   - 'src/'
 exclude:
   - 'src/polyfills'
 clean: true
 temp-directory: 'coverage'
+report-dir: 'coverage'
 skip-full: true
-reporter: [lcov, html, text]
+reporter: [json, html, text]
diff --git a/README.md b/README.md
index b10feb51..51370257 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![npm version](https://badge.fury.io/js/express-graphql.svg)](https://badge.fury.io/js/express-graphql)
 [![Build Status](https://github.com/graphql/express-graphql/workflows/CI/badge.svg?branch=master)](https://github.com/graphql/express-graphql/actions?query=branch%3Amaster)
-[![Coverage Status](https://coveralls.io/repos/graphql/express-graphql/badge.svg?branch=master&service=github)](https://coveralls.io/github/graphql/express-graphql?branch=master)
+[![Coverage Status](https://codecov.io/gh/graphql/express-graphql/branch/master/graph/badge.svg)](https://codecov.io/gh/graphql/express-graphql)
 
 Create a GraphQL HTTP server with any HTTP web framework that supports connect styled middleware, including [Connect](https://github.com/senchalabs/connect) itself, [Express](https://expressjs.com) and [Restify](http://restify.com/).
 
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 00000000..ca5256f7
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,14 @@
+codecov:
+  notify:
+    require_ci_to_pass: yes
+
+parsers:
+  javascript:
+    enable_partials: yes
+
+comment: no
+coverage:
+  status:
+    project:
+      default:
+        target: auto
diff --git a/package-lock.json b/package-lock.json
index a44db7d0..5bf754b2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2175,19 +2175,6 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
-    "coveralls": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/coveralls/-/coveralls-3.1.0.tgz",
-      "integrity": "sha512-sHxOu2ELzW8/NC1UP5XVLbZDzO4S3VxfFye3XYCznopHy02YjNkHcj5bKaVw2O7hVaBdBjEdQGpie4II1mWhuQ==",
-      "dev": true,
-      "requires": {
-        "js-yaml": "^3.13.1",
-        "lcov-parse": "^1.0.0",
-        "log-driver": "^1.2.7",
-        "minimist": "^1.2.5",
-        "request": "^2.88.2"
-      }
-    },
     "cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
@@ -4111,12 +4098,6 @@
       "integrity": "sha1-RIR8o5TOjWtSGuhYFr1kUJlCs4U=",
       "dev": true
     },
-    "lcov-parse": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/lcov-parse/-/lcov-parse-1.0.0.tgz",
-      "integrity": "sha1-6w1GtUER68VhrLTECO+TY73I9+A=",
-      "dev": true
-    },
     "leven": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/leven/-/leven-3.1.0.tgz",
@@ -4199,12 +4180,6 @@
       "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=",
       "dev": true
     },
-    "log-driver": {
-      "version": "1.2.7",
-      "resolved": "https://registry.npmjs.org/log-driver/-/log-driver-1.2.7.tgz",
-      "integrity": "sha512-U7KCmLdqsGHBLeWqYlFA0V0Sl6P08EE1ZrmA9cxjUE0WVqT9qnyVDPz1kzpFEP0jdJuFnasWIfSd7fsaNXkpbg==",
-      "dev": true
-    },
     "log-symbols": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/log-symbols/-/log-symbols-3.0.0.tgz",
diff --git a/package.json b/package.json
index 5511e5ee..b877a242 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,6 @@
     "body-parser": "1.19.0",
     "chai": "4.2.0",
     "connect": "3.7.0",
-    "coveralls": "3.1.0",
     "dtslint": "3.6.10",
     "eslint": "7.2.0",
     "eslint-plugin-flowtype": "5.1.3",