diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3a7f774..bffcbc0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,6 +20,8 @@ jobs:
       with:
         egress-policy: audit
 
+    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
       with:
@@ -31,4 +33,8 @@ jobs:
     - name: Install dependencies
       run: npm ci
     - name: npm test
+      if: matrix.node-version != '20.x'
       run: npm run node:test
+    - name: npm test with amaro
+      if: matrix.node-version == '20.x'
+      run: NODE_OPTIONS="--import=./tools/strip.js" npm run node:test
diff --git a/package-lock.json b/package-lock.json
index dddcb54..dfcb68f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,6 +7,9 @@
     "": {
       "name": "node-api-cts",
       "version": "0.1.0",
+      "dependencies": {
+        "amaro": "^1.1.5"
+      },
       "devDependencies": {
         "@types/node": "^24.10.1"
       }
@@ -21,6 +24,15 @@
         "undici-types": "~7.16.0"
       }
     },
+    "node_modules/amaro": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/amaro/-/amaro-1.1.5.tgz",
+      "integrity": "sha512-oo72OEYOSfSPe+96V+jh41gaFWfl9HddXFAHMFM+emjdZkzbtcg0bFWoYaWf8IMlqmZ0VM8F13frI8Ktt3+ADA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=22"
+      }
+    },
     "node_modules/undici-types": {
       "version": "7.16.0",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
diff --git a/package.json b/package.json
index c2483a1..7d8c683 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,8 @@
   },
   "devDependencies": {
     "@types/node": "^24.10.1"
+  },
+  "dependencies": {
+    "amaro": "^1.1.5"
   }
 }
diff --git a/tools/loader.js b/tools/loader.js
new file mode 100644
index 0000000..a510b5a
--- /dev/null
+++ b/tools/loader.js
@@ -0,0 +1,24 @@
+import path from 'node:path';
+
+export async function resolve(specifier, context, nextResolve) {
+  const result = await nextResolve(specifier, context);
+  const ext = path.extname(new URL(result.url).pathname);
+  if (ext === '.ts') {
+    return {
+      ...result,
+      format: 'module',
+    };
+  }
+  return result;
+}
+
+export async function load(url, context, nextLoad) {
+  const ext = path.extname(new URL(url).pathname);
+  if (ext === '.ts') {
+    return nextLoad(url, {
+      ...context,
+      format: 'module-typescript',
+    });
+  }
+  return nextLoad(url, context);
+}
diff --git a/tools/strip.js b/tools/strip.js
new file mode 100644
index 0000000..aead6f0
--- /dev/null
+++ b/tools/strip.js
@@ -0,0 +1,4 @@
+import { register } from 'node:module';
+import 'amaro/strip';
+
+register('./loader.js', import.meta.url);