diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f345279d54..ad4bbe922f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,179 +46,6 @@ jobs:
       - run: sudo apt-get install shellcheck
       - run: git ls-files '*.sh' | xargs shellcheck
 
-  # Run the integration, find and mapreduce tests against CouchDB on Node.js.
-  # This should be run against every version of CouchDB and every version of
-  # Node.js we support.
-
-  couchdb-nodejs:
-    needs: lint
-    strategy:
-      fail-fast: false
-      matrix:
-        couchdb: ['2.3', '3.1']
-        node: [18, 20]
-        cmd:
-          - npm test
-          - TYPE=find PLUGINS=pouchdb-find ADAPTERS=http npm test
-          - TYPE=mapreduce ADAPTERS=http npm test
-    runs-on: ubuntu-latest
-    env:
-      CLIENT: node
-      SERVER: couchdb-master
-      COUCH_HOST: http://admin:password@127.0.0.1:5984
-      SKIP_MIGRATION: 1
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          persist-credentials: false
-      - uses: ./.github/actions/install-node-package
-        with:
-          node-version: ${{ matrix.node }}
-      - uses: ./.github/actions/install-couchdb
-        with:
-          couchdb-version: ${{ matrix.couchdb }}
-      - uses: ./.github/actions/build-pouchdb
-      - id: test
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: First retry
-        id: retry
-        if: steps.test.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: Second retry
-        if: steps.retry.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-
-  # Run the integration, find and mapreduce tests against CouchDB in the
-  # browser. This should be run against every version of CouchDB we support and
-  # every target browser.
-
-  couchdb-browser:
-    needs: lint
-    strategy:
-      fail-fast: false
-      matrix:
-        couchdb: ['2.3','3.1']
-        client: ['firefox', 'chromium', 'webkit']
-        cmd:
-          - npm test
-          - TYPE=find PLUGINS=pouchdb-find ADAPTERS=http npm test
-          - TYPE=mapreduce ADAPTERS=http npm test
-    runs-on: ubuntu-latest
-    env:
-      USE_MINIFIED: 1
-      CLIENT: ${{ matrix.client }}
-      SERVER: couchdb-master
-      COUCH_HOST: http://admin:password@127.0.0.1:5984
-      SKIP_MIGRATION: 1
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          persist-credentials: false
-      - uses: ./.github/actions/install-node-package
-        with:
-          node-version: ${{ env.NODE_VERSION }}
-      - uses: ./.github/actions/install-playwright
-      - uses: ./.github/actions/install-couchdb
-        with:
-          couchdb-version: ${{ matrix.couchdb }}
-      - uses: ./.github/actions/build-pouchdb
-      - id: test
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: First retry
-        id: retry
-        if: steps.test.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: Second retry
-        if: steps.retry.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-
-  # Run the integration, find and mapreduce tests against all the Node.js
-  # PouchDB adapters. This should be run for every adapter on every version of
-  # Node.js we support.
-
-  nodejs-adapter:
-    needs: lint
-    strategy:
-      fail-fast: false
-      matrix:
-        node: [18, 20]
-        adapter: ['leveldb', 'memory']
-        cmd:
-          - npm test
-          - TYPE=find PLUGINS=pouchdb-find npm test
-          - TYPE=mapreduce npm test
-    runs-on: ubuntu-latest
-    env:
-      CLIENT: node
-      ADAPTERS: ${{ matrix.adapter }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          persist-credentials: false
-      - uses: ./.github/actions/install-node-package
-        with:
-          node-version: ${{ matrix.node }}
-      - uses: ./.github/actions/build-pouchdb
-      - id: test
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: First retry
-        id: retry
-        if: steps.test.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: Second retry
-        if: steps.retry.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-
-  # Run the integration, find and mapreduce tests against all the browser-based
-  # adapters. PouchDB adapters. This should be run for every adapter on every
-  # target browser.
-
-  browser-adapter:
-    needs: lint
-    strategy:
-      fail-fast: false
-      matrix:
-        client: ['firefox', 'chromium', 'webkit']
-        adapter: ['idb', 'indexeddb', 'memory']
-        cmd:
-          - npm test
-          - TYPE=find PLUGINS=pouchdb-find npm test
-          - TYPE=mapreduce npm test
-    runs-on: ubuntu-latest
-    env:
-      USE_MINIFIED: 1
-      CLIENT: ${{ matrix.client }}
-      ADAPTERS: ${{ matrix.adapter }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          persist-credentials: false
-      - uses: ./.github/actions/install-node-package
-        with:
-          node-version: ${{ env.NODE_VERSION }}
-      - uses: ./.github/actions/install-playwright
-      - uses: ./.github/actions/build-pouchdb
-      - id: test
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: First retry
-        id: retry
-        if: steps.test.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-        continue-on-error: true
-      - name: Second retry
-        if: steps.retry.outcome == 'failure'
-        run: ${{ matrix.cmd }}
-
-  # Run all the other testing tasks -- unit tests, and so on. These should be
-  # run on every version of Node.js that we support.
-
   nodejs:
     needs: lint
     strategy:
@@ -226,14 +53,7 @@ jobs:
       matrix:
         node: [18, 20]
         cmd:
-          - CLIENT=firefox npm run test-webpack
-          - AUTO_COMPACTION=true npm test
-          - PERF=1 npm test
-          - npm run test-unit
-          - npm run test-component
-          - npm run test-fuzzy
-          # - SERVER=pouchdb-server POUCHDB_SERVER_FLAGS=--in-memory PLUGINS=pouchdb-find npm run report-coverage
-          - npm run verify-build
+          - SERVER=pouchdb-server POUCHDB_SERVER_FLAGS=--in-memory PLUGINS=pouchdb-find npm run test-coverage
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
diff --git a/README.md b/README.md
index 05812d8318..1c18491be1 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 [PouchDB](https://pouchdb.com/) – The Database that Syncs!
 =========
 
-[![Build Status](https://github.com/pouchdb/pouchdb/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/pouchdb/pouchdb/actions/workflows/ci.yml?query=branch%3Amaster) [![Coverage Status](https://s3.amazonaws.com/assets.coveralls.io/badges/coveralls_100.svg)](https://coveralls.io/github/pouchdb/pouchdb?branch=master) [![Greenkeeper badge](https://badges.greenkeeper.io/pouchdb/pouchdb.svg)](https://greenkeeper.io/) [![npm version](https://img.shields.io/npm/v/pouchdb.svg)](https://www.npmjs.com/package/pouchdb) [![jsDelivr Hits](https://data.jsdelivr.com/v1/package/npm/pouchdb/badge?style=rounded)](https://www.jsdelivr.com/package/npm/pouchdb)
+[![Build Status](https://github.com/pouchdb/pouchdb/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/pouchdb/pouchdb/actions/workflows/ci.yml?query=branch%3Amaster) [![Greenkeeper badge](https://badges.greenkeeper.io/pouchdb/pouchdb.svg)](https://greenkeeper.io/) [![npm version](https://img.shields.io/npm/v/pouchdb.svg)](https://www.npmjs.com/package/pouchdb) [![jsDelivr Hits](https://data.jsdelivr.com/v1/package/npm/pouchdb/badge?style=rounded)](https://www.jsdelivr.com/package/npm/pouchdb)
 
 PouchDB is an open-source JavaScript database inspired by [Apache CouchDB](http://couchdb.apache.org/) that is designed to run well within the browser.
 
diff --git a/bin/test-node.sh b/bin/test-node.sh
index ae0cdc92d2..603596f37c 100755
--- a/bin/test-node.sh
+++ b/bin/test-node.sh
@@ -29,10 +29,6 @@ fi
 if [ $TYPE = "find" ]; then
     TESTS_PATH="tests/find/*/test.*.js"
 fi
-if [ "$COVERAGE" ]; then
-    # run all tests when testing for coverage
-    TESTS_PATH="tests/{unit,integration,mapreduce,component}/test*.js tests/find/*/test.*.js"
-fi
 
 if [ "$PERF" ]; then
     node tests/performance/index.js
@@ -47,8 +43,11 @@ elif [ ! "$COVERAGE" ]; then
         --grep="$GREP" \
         "$TESTS_PATH"
 else
+    # Ignore TESTS_PATH:
+    # run all tests when testing for coverage
+
     # --exit required to workaround #8839
-    ./node_modules/.bin/istanbul cover \
+    ./node_modules/.bin/nyc \
        --no-default-excludes -x 'tests/**' -x 'node_modules/**' \
        ./node_modules/mocha/bin/_mocha -- \
         --exit \
@@ -57,9 +56,9 @@ else
         --require=./tests/integration/node.setup.js \
         --reporter="$REPORTER" \
         --grep="$GREP" \
-        "$TESTS_PATH"
-
-    ./node_modules/.bin/istanbul check-coverage --line 100
+        'tests/{unit,integration,mapreduce,component}/test*.js' \
+        'tests/find/*/test.*.js'
+    ./node_modules/.bin/nyc check-coverage --line 100
 fi
 
 EXIT_STATUS=$?
diff --git a/package.json b/package.json
index 7ffdd57710..75a9d960e8 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,6 @@
     "build-site": "node ./bin/build-site.js",
     "test-coverage": "./bin/test-coverage.sh",
     "coverage": "COVERAGE=1 SERVER=pouchdb-server POUCHDB_SERVER_FLAGS=--in-memory PLUGINS=pouchdb-find ./bin/test-coverage.sh",
-    "report-coverage": "npm run test-coverage && istanbul-coveralls --no-rm",
     "build-test": "npm run build-test-utils && npm run build-perf",
     "build-test-utils": "browserify tests/integration/utils.js > tests/integration/utils-bundle.js",
     "build-perf": "browserify tests/performance/index.js > tests/performance-bundle.js",
@@ -76,8 +75,6 @@
     "glob": "7.1.5",
     "glob-watcher": "^6.0.0",
     "http-server": "0.12.3",
-    "istanbul": "0.4.5",
-    "istanbul-coveralls": "1.0.3",
     "less": "3.9.0",
     "lodash": "4.17.21",
     "marky": "1.2.5",
@@ -85,6 +82,7 @@
     "mkdirp": "0.5.1",
     "mocha": "10.2.0",
     "ncp": "2.0.0",
+    "nyc": "^15.1.0",
     "playwright": "1.42.1",
     "pouchdb-express-router": "0.0.11",
     "replace": "1.2.1",