diff --git a/.github/workflows/node.js.yml b/.github/workflows/test.yml
similarity index 87%
rename from .github/workflows/node.js.yml
rename to .github/workflows/test.yml
index b67b04ae..8fceb3a9 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/test.yml
@@ -14,11 +14,13 @@ jobs:
     runs-on: ${{ matrix.os }}
     timeout-minutes: 12
     strategy:
+      fail-fast: false
       matrix:
         # node-14's npm must be updated, but no longer updatable due to:
         #   https://github.com/npm/cli/issues/2663
         # because of this, node-14 test strategy is removed :(
-        node-version: [16.x, 18.x, 19.x]
+        # node-version: [16.x, 18.x, 19.x, 20.x, 20-nightly]
+        node-version: [16.x, 18.x, 19.x, 21-nightly]
         os: [ubuntu-latest, windows-latest]
     steps:
     - uses: actions/checkout@v3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f53a21ff..dd28749e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # changelog
 
+ * 2.2.3 _May.16.2023_
+   * [add node v21 nightly](https://github.com/iambumblehead/esmock/pull/199) to test ci pipeline
+   * send wide uri definitions to loader using loader worker
+   * [encountered upstream error](https://github.com/nodejs/node/issues/47614) when attempting to add node v20 tests
  * 2.2.2 _May.06.2023_
    * [detect async import.meta.resolve](https://github.com/iambumblehead/esmock/pull/201) and handle in a separate way
    * remove un-necessary usage of await keyword in README example
diff --git a/README.md b/README.md
index 74962a40..cc2569c0 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,10 @@
     "test-ts": "node --loader=ts-node/esm --loader=esmock --test *ts",
     "test-jest": "NODE_OPTIONS=--loader=esmock jest"
   },
+  "ava": [
+    "ava is incompatible w/ --loader and node v20 or greater",
+    "https://github.com/avajs/ava/issues/3195"
+  ],
   "jest": {
     "runner": "jest-light-runner"
   }
diff --git a/package.json b/package.json
index 294e14d8..7c3e7f5e 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "esmock",
   "type": "module",
-  "version": "2.2.2",
+  "version": "2.2.3",
   "license": "ISC",
   "readmeFilename": "README.md",
   "description": "provides native ESM import mocking for unit tests",
@@ -54,7 +54,7 @@
     "rewire"
   ],
   "engines": {
-    "node": ">=14.16.0 <=19.9.0"
+    "node": ">=14.16.0"
   },
   "dependencies": {
     "resolvewithplus": "^2.0.1"
diff --git a/src/esmockCache.js b/src/esmockCache.js
index c092086a..51c625b6 100644
--- a/src/esmockCache.js
+++ b/src/esmockCache.js
@@ -7,6 +7,8 @@ const esmockCache = {
 }
 
 const esmockTreeIdSet = (key, keylong) => (
+  typeof global.postMessageEsmk === 'function'
+    && global.postMessageEsmk({ key, keylong }),
   global.mockKeys[String(key)] = keylong)
 
 const esmockTreeIdGet = key => (
diff --git a/src/esmockIsLoader.js b/src/esmockIsLoader.js
index 2714ab45..3aa07def 100644
--- a/src/esmockIsLoader.js
+++ b/src/esmockIsLoader.js
@@ -1,4 +1,4 @@
 import { loaderIsVerified } from './esmockLoader.js'
 
 export default (c => async () =>
-  c || (c = await loaderIsVerified(import.meta.url)))()
+  (c = c || loaderIsVerified(import.meta.url)))()
diff --git a/src/esmockLoader.js b/src/esmockLoader.js
index 6b5c3d74..aa2342df 100644
--- a/src/esmockLoader.js
+++ b/src/esmockLoader.js
@@ -16,6 +16,13 @@ const withHashRe = /.*#-#/
 const isesmRe = /isesm=true/
 const isnotfoundRe = /isfound=false/
 
+const globalPreload = (({ port }) => (
+  port.addEventListener('message', ev => (
+    global.mockKeys[ev.data.key] = ev.data.keylong)),
+  port.unref(),
+  'global.postMessageEsmk = d => port.postMessage(d)'
+))
+
 // new versions of node: when multiple loaders are used and context
 // is passed to nextResolve, the process crashes in a recursive call
 // see: /esmock/issues/#48
@@ -28,8 +35,8 @@ const nextResolveCall = async (nextResolve, specifier, context) => (
   context.parentURL &&
     (context.conditions.slice(-1)[0] === 'node-addons'
      || context.importAssertions || isLT1612)
-    ? await nextResolve(specifier, context)
-    : await nextResolve(specifier))
+    ? nextResolve(specifier, context)
+    : nextResolve(specifier))
 
 const resolve = async (specifier, context, nextResolve) => {
   const { parentURL } = context
@@ -123,4 +130,4 @@ const load = async (url, context, nextLoad) => {
 // node lt 16.12 require getSource, node gte 16.12 warn remove getSource
 const getSource = isLT1612 && load
 
-export {load, resolve, getSource, loaderIsVerified}
+export {load, resolve, getSource, loaderIsVerified, globalPreload}
diff --git a/tests/package.json b/tests/package.json
index 8b936552..5832811f 100644
--- a/tests/package.json
+++ b/tests/package.json
@@ -26,6 +26,8 @@
   "scripts": {
     "mini": "cd .. && cd src && npx esbuild esmock.js --minify --bundle --allow-overwrite --platform=node --format=esm --outfile=esmock.js",
     "isnodelt18": "node -e \"+process.versions.node.split('.')[0] < 18 || process.exit(1)\"",
+    "isnodegt19": "node -e \"+process.versions.node.split('.')[0] > 19 || process.exit(1)\"",
+    "isnodenight": "node -e \"process.versions.node.includes('night') || process.exit(1)\"",
     "install:esmock": "cd .. && npm install",
     "install:test-ava": "cd tests-ava && npm install",
     "install:test-uvu": "cd tests-uvu && npm install",
@@ -38,10 +40,10 @@
     "install:test-nodets": "cd tests-nodets && npm install",
     "install:test-mocha": "cd tests-mocha && npm install",
     "install:all": "node --version && npm install && npm-run-all install:test*",
-    "test:test-ava": "cd tests-ava && npm test",
     "test:test-uvu": "cd tests-uvu && npm test",
     "test:test-mocha": "cd tests-mocha && npm test",
-    "test:node18-test-tsm": "cd tests-tsm && npm test",
+    "test:node19-tsm": " cd tests-tsm && npm test",
+    "test:node18-test-tsm": "npm run isnodenight || npm run test:node19-tsm",
     "test:node18-test-node": "cd tests-node && npm test",
     "test:node18-test-jest": "cd tests-jest && npm test",
     "test:node18-test-jest-ts": "cd tests-jest-ts && npm test",
@@ -49,7 +51,9 @@
     "test:node18-test-source-map": "cd tests-source-map && npm test",
     "test:node18-test-no-loader": "cd tests-no-loader && npm test",
     "test:node18:all": "npm run isnodelt18 || npm-run-all test:node18-test*",
-    "test:all": "npm-run-all test:test* && npm run test:node18:all",
+    "test:nodelt20-test-ava": "cd tests-ava && npm test",
+    "test:nodelt20:all": "npm run isnodegt19 || npm-run-all test:nodelt20-test*",
+    "test:all": "npm-run-all test:test* && npm run test:node18:all && npm run test:nodelt20:all",
     "test:all-cover": "c8 --src=../src/* npm run test:all",
     "test:all-ci": "npm run mini && npm run test:all"
   }
diff --git a/tests/tests-ava/package.json b/tests/tests-ava/package.json
index 366e37d3..42a43ceb 100644
--- a/tests/tests-ava/package.json
+++ b/tests/tests-ava/package.json
@@ -6,7 +6,7 @@
     "url": "https://github.com/iambumblehead/esmock.git"
   },
   "dependencies": {
-    "ava": "^4.3.3",
+    "ava": "^5.2.0",
     "esmock": "file:..",
     "sinon": "file:../node_modules/sinon",
     "eslint": "file:../node_modules/eslint",
diff --git a/tests/tests-tsm/package.json b/tests/tests-tsm/package.json
index 8600df41..5c76b27c 100644
--- a/tests/tests-tsm/package.json
+++ b/tests/tests-tsm/package.json
@@ -6,7 +6,7 @@
     "url": "https://github.com/iambumblehead/esmock.git"
   },
   "dependencies": {
-    "tsm": "^2.2.2",
+    "tsm": "^2.3.0",
     "esmock": "file:..",
     "pg": "file:../node_modules/pg",
     "sinon": "file:../node_modules/sinon",