diff --git a/.github/workflows/publish-immutable-actions.yml b/.github/workflows/publish-immutable-actions.yml
deleted file mode 100644
index 3e75a5c..0000000
--- a/.github/workflows/publish-immutable-actions.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-name: 'Publish Immutable Action Version'
-
-on:
-  release:
-    types: [published]
-
-permissions: {}
-
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      id-token: write
-      packages: write
-
-    steps:
-      - name: Checking out
-        uses: actions/checkout@v5
-      - name: Publish
-        id: publish
-        uses: actions/publish-immutable-action@v0.0.4
diff --git a/.node-version b/.node-version
index 1cc433a..341cb50 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-20.6.0
+24.5.0
diff --git a/action.yml b/action.yml
index bc45f79..a5b01ca 100644
--- a/action.yml
+++ b/action.yml
@@ -73,5 +73,5 @@ outputs:
     description: 'The URL for the attestation summary.'
 
 runs:
-  using: node20
+  using: node24
   main: ./dist/index.js
diff --git a/package-lock.json b/package-lock.json
index acaa8a4..b4ed42f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "actions/attest",
-  "version": "2.4.0",
+  "version": "3.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "actions/attest",
-      "version": "2.4.0",
+      "version": "3.0.0",
       "license": "MIT",
       "dependencies": {
         "@actions/attest": "^1.6.0",
@@ -37,7 +37,7 @@
         "undici": "^5.29.0"
       },
       "engines": {
-        "node": ">=20"
+        "node": ">=24"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
diff --git a/package.json b/package.json
index 3929c03..755cbe2 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "actions/attest",
   "description": "Generate signed attestations for workflow artifacts",
-  "version": "2.4.0",
+  "version": "3.0.0",
   "author": "",
   "private": true,
   "homepage": "https://github.com/actions/attest",
@@ -20,7 +20,7 @@
     ".": "./dist/index.js"
   },
   "engines": {
-    "node": ">=20"
+    "node": ">=24"
   },
   "scripts": {
     "bundle": "npm run format:write && npm run package",