diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index b6a3c64a7..7be71d1e0 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -40,3 +40,4 @@ jobs:
       - run: npm test
         env:
           CI: true
+      - run: bash <(curl -s --retry 5 --retry-delay 2 --connect-timeout 2 https://codecov.io/bash)
diff --git a/README.md b/README.md
index d3d85ac45..3fcbb7e69 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@
     <a href="https://www.npmjs.com/package/tailwindcss"><img src="https://img.shields.io/npm/dt/tailwindcss.svg" alt="Total Downloads"></a>
     <a href="https://github.com/tailwindcss/tailwindcss/releases"><img src="https://img.shields.io/npm/v/tailwindcss.svg" alt="Latest Release"></a>
     <a href="https://github.com/tailwindcss/tailwindcss/blob/master/LICENSE"><img src="https://img.shields.io/npm/l/tailwindcss.svg" alt="License"></a>
+    <a href="https://codecov.io/gh/tailwindcss/tailwindcss"><img src="https://codecov.io/gh/tailwindcss/tailwindcss/coverage.svg?branch=master" alt="Code Coverage"></a>
 </p>
 
 ------
diff --git a/package.json b/package.json
index 5912e275c..4a6bb8bed 100644
--- a/package.json
+++ b/package.json
@@ -91,6 +91,7 @@
     ]
   },
   "jest": {
+    "collectCoverage": true,
     "testTimeout": 30000,
     "setupFilesAfterEnv": [
       "<rootDir>/jest/customMatchers.js"