diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7be35f53..569a5e2b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,9 @@
 # changelog
 
- * 2.3.3 _Jul.27.2023_
+ * 2.3.3 _Jul.28.2023_
    * [do not error when processing node hashbang](https://github.com/iambumblehead/esmock/pull/217) scripts from @tommy-mitchell
+   * [add note explaining](https://github.com/iambumblehead/esmock/pull/211) why tsx [does not work](https://github.com/esbuild-kit/tsx/issues/264)
+   * [pin node 18.16.x](https://github.com/iambumblehead/esmock/pull/217) to ci test matrix, re node [!48948](https://github.com/nodejs/node/issues/48948)
  * 2.3.2 _Jul.22.2023_
    * [restore ava unit-test](https://github.com/iambumblehead/esmock/pull/213) process at node20 test pipeline
    * [investigate problems](https://github.com/iambumblehead/esmock/issues/209) using tsx from @tommy-mitchell
diff --git a/README.md b/README.md
index 513b6c29..3307c6db 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,8 @@
     "test-uvu": "NODE_OPTIONS=--loader=esmock uvu spec",
     "test-tsm": "node --loader=tsm --loader=esmock --test *ts",
     "test-ts": "node --loader=ts-node/esm --loader=esmock --test *ts",
-    "test-jest": "NODE_OPTIONS=--loader=esmock jest"
+    "test-jest": "NODE_OPTIONS=--loader=esmock jest",
+    "test-tsx": "⚠ https://github.com/esbuild-kit/tsx/issues/264"
   },
   "jest": {
     "runner": "jest-light-runner"
diff --git a/tests/tests-ava-tsx/esmock.ava.tsx.test.ts b/tests/tests-ava-tsx/esmock.ava.tsx.test.ts
deleted file mode 100644
index 1cd5fe09..00000000
--- a/tests/tests-ava-tsx/esmock.ava.tsx.test.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-import test from 'ava'
-import esmock from 'esmock'
-
-test('should mock js when using tsx', async t => {
-  const main = await esmock('../local/main.js', {
-    path: {
-      basename: () => 'hellow'
-    }
-  })
-
-  t.is(main.pathbasenamewrap(), 'hellow')
-})
-
-test.failing('should mock ts when using tsx - unknown file extension', async t => {
-  const main = await esmock('../local/main.ts', {
-    path: {
-      basename: () => 'hellow'
-    }
-  })
-
-  t.is(main.pathbasenamewrap(), 'hellow')
-})
-
-test.failing('should mock ts when using tsx - invalid moduleId', async t => {
-  const main = await esmock('../local/mainUnique.js', {
-    path: {
-      basename: () => 'hellow'
-    }
-  })
-
-  t.is(main.pathbasenamewrap(), 'hellow')
-})
diff --git a/tests/tests-ava-tsx/package.json b/tests/tests-ava-tsx/package.json
deleted file mode 100644
index 65a7a7a3..00000000
--- a/tests/tests-ava-tsx/package.json
+++ /dev/null
@@ -1,29 +0,0 @@
-{
-  "type": "module",
-  "description": "esmock unit tests, tsx with ava",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/iambumblehead/esmock.git"
-  },
-  "dependencies": {
-    "ava": "^5.3.1",
-    "babelGeneratedDoubleDefault": "file:../local/babelGeneratedDoubleDefault",
-    "eslint": "file:../node_modules/eslint",
-    "esmock": "file:..",
-    "form-urlencoded": "file:../node_modules/form-urlencoded",
-    "sinon": "file:../node_modules/sinon",
-    "tsx": "^3.12.7"
-  },
-  "scripts": {
-    "test": "ava"
-  },
-  "ava": {
-    "extensions": {
-      "ts": "module"
-    },
-    "nodeArguments": [
-      "--loader=tsx",
-      "--loader=esmock"
-    ]
-  }
-}
diff --git a/tests/tests-tsx/esmock.node.tsx.test.ts b/tests/tests-tsx/esmock.node.tsx.test.ts
new file mode 100644
index 00000000..3211030f
--- /dev/null
+++ b/tests/tests-tsx/esmock.node.tsx.test.ts
@@ -0,0 +1,25 @@
+import test from 'node:test'
+import assert from 'assert'
+import esmock from 'esmock'
+
+test('should mock js when using tsx', async () => {
+  const main = await esmock('../local/main.js', {
+    path: {
+      basename: () => 'hellow'
+    }
+  })
+
+  assert.strictEqual(main.pathbasenamewrap(), 'hellow')
+})
+
+// tsx fails :/ https://github.com/esbuild-kit/tsx/issues/264
+//
+// test('should mock ts when using tsx - unknown file extension', async () => {
+//   const main = await esmock('../local/main.ts', {
+//     path: {
+//       basename: () => 'hellow'
+//     }
+//   })
+//
+//   assert.strictEqual(main.pathbasenamewrap(), 'hellow')
+// })
diff --git a/tests/tests-tsx/package.json b/tests/tests-tsx/package.json
new file mode 100644
index 00000000..80ab97dd
--- /dev/null
+++ b/tests/tests-tsx/package.json
@@ -0,0 +1,15 @@
+{
+  "type": "module",
+  "description": "esmock unit tests, tsx with node",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/iambumblehead/esmock.git"
+  },
+  "dependencies": {
+    "esmock": "file:..",
+    "tsx": "^3.12.7"
+  },
+  "scripts": {
+    "test": "node --loader=tsx --loader=esmock --test esmock.node.tsx.test.ts"
+  }
+}
diff --git a/tests/tests-ava-tsx/tsconfig.json b/tests/tests-tsx/tsconfig.json
similarity index 100%
rename from tests/tests-ava-tsx/tsconfig.json
rename to tests/tests-tsx/tsconfig.json