diff --git a/.gitignore b/.gitignore
index 1d755557..690e9c07 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,4 +16,3 @@ modules/emitify
 dist
 dist-dev
 
-.putoutcache
diff --git a/.madrun.mjs b/.madrun.mjs
index fedcce38..004673ba 100644
--- a/.madrun.mjs
+++ b/.madrun.mjs
@@ -27,9 +27,9 @@ export default {
     'test:server': () => `tape 'test/**/*.js' 'server/**/*.spec.js' 'common/**/*.spec.js'`,
     'wisdom': () => run(['lint:all', 'build', 'test']),
     'wisdom:type': () => 'bin/release.mjs',
-    'coverage': async () => [testEnv, `nyc ${await cutEnv('test')}`],
+    'coverage': async () => [testEnv, `c8 ${await cutEnv('test')}`],
     'coverage:report': () => 'nyc report --reporter=lcov',
-    'report': () => 'nyc report --reporter=text-lcov | coveralls',
+    'report': () => 'c8 report --reporter=text-lcov | coveralls',
     '6to5': () => 'webpack --progress',
     '6to5:client': () => run('6to5', '--mode production'),
     '6to5:client:dev': async () => await run('6to5', '--mode development', {
diff --git a/package.json b/package.json
index 3ea82dda..558fa94f 100644
--- a/package.json
+++ b/package.json
@@ -152,6 +152,7 @@
     "auto-globals": "^2.0.0",
     "babel-loader": "^8.0.0",
     "babel-plugin-macros": "^3.0.0",
+    "c8": "^7.5.0",
     "cheerio": "^1.0.0-rc.5",
     "clean-css-loader": "^2.0.0",
     "codegen.macro": "^4.0.0",
@@ -180,7 +181,6 @@
     "morgan": "^1.6.1",
     "multi-rename": "^2.0.0",
     "nodemon": "^2.0.1",
-    "nyc": "^15.0.0",
     "optimize-css-assets-webpack-plugin": "^5.0.0",
     "philip": "^2.0.0",
     "place": "^1.1.4",