diff --git a/.github/workflows/publish_dev_docker_image.yaml b/.github/workflows/publish_dev_docker_image.yaml
index c3accdd..d7634e2 100644
--- a/.github/workflows/publish_dev_docker_image.yaml
+++ b/.github/workflows/publish_dev_docker_image.yaml
@@ -8,6 +8,11 @@ jobs:
   push_to_registry:
     name: Push Docker image to GitHub Container Registry(dev)
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
     steps:
       -
         name: Check out the repo
@@ -24,7 +29,7 @@ jobs:
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
-          password: ${{ secrets.CR_PAT }}
+          password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Build and push to GitHub Container Registry
         uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
diff --git a/.github/workflows/publish_docker_image.yaml b/.github/workflows/publish_docker_image.yaml
index 5b08651..f23d9be 100644
--- a/.github/workflows/publish_docker_image.yaml
+++ b/.github/workflows/publish_docker_image.yaml
@@ -7,6 +7,11 @@ jobs:
   push_to_registry:
     name: Push Docker image to GitHub Container Registry(latest)
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
     steps:
       -
         name: Check out the repo
@@ -29,7 +34,7 @@ jobs:
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
-          password: ${{ secrets.CR_PAT }}
+          password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Build and push to GitHub Container Registry
         uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
diff --git a/README.md b/README.md
index c400df8..1e81444 100644
--- a/README.md
+++ b/README.md
@@ -28,10 +28,8 @@ find . -type f | xargs sed -i '' -e "s/go-template/example/g"
 
 ### DockerイメージをGitHub Container Registryで公開する際の注意点
 
-デフォルトでは`CR_PAT`が渡されないためGitHub Actionsでのイメージのビルド/プッシュに失敗します。
-また、パッケージを公開したい場合は初回のみ手作業が必要です。
-
-このためDockerイメージをGitHub Container Registryで公開したい場合はオーガニゼーション管理者にご相談ください。
+DockerイメージをGitHub Container Registryで公開したい場合はオーガニゼーション管理者にご相談ください。
+パッケージを公開したい場合は初回のみ手作業が必要です。
 
 ## License