diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index 528124f..dc62a7c 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -19,7 +19,7 @@ jobs:
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
+      - uses: actions/checkout@v4
       - run: corepack enable pnpm
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
index d4078cd..93bd5d7 100644
--- a/.github/workflows/npm-publish.yml
+++ b/.github/workflows/npm-publish.yml
@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
+      - uses: actions/checkout@v4
       - run: corepack enable pnpm
       - uses: actions/setup-node@v3
         with:
@@ -24,7 +24,7 @@ jobs:
     needs: build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
+      - uses: actions/checkout@v4
       - run: corepack enable pnpm
       - uses: actions/setup-node@v3
         with:
diff --git a/package.json b/package.json
index d903838..2e49cfa 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "packageManager": "pnpm@8.8.0",
   "name": "mdast-util-definition-list",
-  "version": "1.4.0",
+  "version": "2.0.0",
   "description": "mdast extension for definition list",
   "author": "Wataru Watanabe",
   "license": "MIT",