diff --git a/.github/workflows/depup.yml b/.github/workflows/depup.yml
index dc43808..28d44c6 100644
--- a/.github/workflows/depup.yml
+++ b/.github/workflows/depup.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: haya14busa/action-depup@v1
+      - uses: haya14busa/action-depup@d6b40096afad49ca676145faaba7190df29a9807 # v1.6.3
         id: depup
         with:
           file: action.yml
@@ -19,7 +19,7 @@ jobs:
           repo: reviewdog/reviewdog
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           title: "chore(deps): update reviewdog to ${{ steps.depup.outputs.latest }}"
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: haya14busa/action-depup@v1
+      - uses: haya14busa/action-depup@d6b40096afad49ca676145faaba7190df29a9807 # v1.6.3
         id: depup
         with:
           file: script.sh
@@ -45,7 +45,7 @@ jobs:
           repo: dominikh/go-tools
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           title: "chore(deps): update staticcheck to ${{ steps.depup.outputs.latest }}"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7f0f699..baa3fc6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,18 +20,18 @@ jobs:
       # (bump:major,bump:minor,bump:patch)
       - id: bumpr
         if: "!startsWith(github.ref, 'refs/tags/')"
-        uses: haya14busa/action-bumpr@v1
+        uses: haya14busa/action-bumpr@78ab5a104d20896c9c9122c64221b3aecf1a8cbb # v1.10.0
 
       # Update corresponding major and minor tag.
       # e.g. Update v1 and v1.2 when releasing v1.2.3
-      - uses: haya14busa/action-update-semver@v1
+      - uses: haya14busa/action-update-semver@fb48464b2438ae82cc78237be61afb4f461265a1 # v1.2.1
         if: "!steps.bumpr.outputs.skip"
         with:
           tag: ${{ steps.bumpr.outputs.next_version }}
 
       # Get tag name.
       - id: tag
-        uses: haya14busa/action-cond@v1
+        uses: haya14busa/action-cond@94f77f7a80cd666cb3155084e428254fea4281fd # v1.2.1
         with:
           cond: "${{ startsWith(github.ref, 'refs/tags/') }}"
           if_true: ${{ github.ref }}
@@ -53,4 +53,4 @@ jobs:
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Post bumpr status comment
-        uses: haya14busa/action-bumpr@v1
+        uses: haya14busa/action-bumpr@78ab5a104d20896c9c9122c64221b3aecf1a8cbb # v1.10.0
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index bfb6088..870a139 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -11,13 +11,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: haya14busa/action-cond@v1
+      - uses: haya14busa/action-cond@94f77f7a80cd666cb3155084e428254fea4281fd # v1.2.1
         id: reporter
         with:
           cond: ${{ github.event_name == 'pull_request' }}
           if_true: "github-pr-review"
           if_false: "github-check"
-      - uses: reviewdog/action-shellcheck@v1
+      - uses: reviewdog/action-shellcheck@6e0e63d1750d02d761b3df0f2c5ba9f9ac4a9ed7 # v1.29.0
         with:
           github_token: ${{ secrets.github_token }}
           reporter: ${{ steps.reporter.outputs.value }}
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: reviewdog/action-misspell@v1
+      - uses: reviewdog/action-misspell@18ffb61effb93b47e332f185216be7e49592e7e1 # v1.26.1
         with:
           github_token: ${{ secrets.github_token }}
           reporter: github-check
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b0204d8..c3186bb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@f111f3307d8850f501ac008e886eec1fd1932a34 # v5.3.0
         with:
           go-version-file: "testdata/go.mod"
       - uses: ./
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@f111f3307d8850f501ac008e886eec1fd1932a34 # v5.3.0
         with:
           go-version-file: "testdata/go.mod"
       - uses: ./