diff --git a/actions/commitlint/README.md b/actions/commitlint/README.md
index 1d2111e51..b4f8e2ad4 100644
--- a/actions/commitlint/README.md
+++ b/actions/commitlint/README.md
@@ -4,7 +4,7 @@ https://github.com/conventional-changelog/commitlint
 
 ## Simple configuration
 
-1. `echo "module.exports = {extends: ['@commitlint/config-conventional']}" > commitlint.config.js`
+1. `echo "export default {extends: ['@commitlint/config-conventional']}" > commitlint.config.mjs`
 2. `trunk actions enable commitlint`
 
 This will install the basic config and run commitlint on every `commit-msg` hook.
@@ -14,7 +14,7 @@ This will install the basic config and run commitlint on every `commit-msg` hook
 In order to use different commitlint configuration or specify a specific commitlint version, you
 must:
 
-1. Modify your `commitlint.config.js` accordingly
+1. Modify your `commitlint.config.mjs` accordingly
 2. Override the `packages_file` field for the action and specify a package.json
 
 For example:
@@ -30,10 +30,10 @@ actions:
       packages_file: ${workspace}/.trunk/commitlint/package.json
 ```
 
-`commitlint.config.js`:
+`commitlint.config.mjs`:
 
 ```js
-module.exports = {
+export default {
   extends: ["@commitlint/config-angular", "@commitlint/config-conventional"],
 };
 ```
diff --git a/actions/commitlint/commitlint.test.ts b/actions/commitlint/commitlint.test.ts
index fe8402105..f9dd17fb1 100644
--- a/actions/commitlint/commitlint.test.ts
+++ b/actions/commitlint/commitlint.test.ts
@@ -4,8 +4,8 @@ import { TrunkActionDriver } from "tests/driver";
 
 const preCheck = (driver: TrunkActionDriver) => {
   driver.writeFile(
-    "commitlint.config.js",
-    "module.exports = {extends: ['@commitlint/config-conventional']}",
+    "commitlint.config.mjs",
+    "export default {extends: ['@commitlint/config-conventional']}",
   );
 };
 
diff --git a/actions/commitlint/package.json b/actions/commitlint/package.json
index dedb725d5..972a41131 100644
--- a/actions/commitlint/package.json
+++ b/actions/commitlint/package.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "@commitlint/cli": "^17.0",
-    "@commitlint/config-conventional": "^17.0"
+    "@commitlint/cli": "^19.0",
+    "@commitlint/config-conventional": "^19.0"
   }
 }