diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4fc7893..0261b16 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     env:
       KSADK_WEB_VERSION: "0.3.0"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
@@ -73,7 +73,7 @@ jobs:
       matrix:
         google-adk: ["1.34.3", "2.5.0"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
@@ -117,7 +117,7 @@ jobs:
       # KsADK's public CLI help includes Chinese text.
       PYTHONUTF8: "1"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
@@ -144,7 +144,7 @@ jobs:
       matrix:
         os: [macos-latest, windows-latest, ubuntu-latest]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index c80ae05..d410d8c 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -20,7 +20,7 @@ jobs:
   analyze:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
diff --git a/.github/workflows/publish-pypi.yml b/.github/workflows/publish-pypi.yml
index 3eebf2b..80cbb44 100644
--- a/.github/workflows/publish-pypi.yml
+++ b/.github/workflows/publish-pypi.yml
@@ -44,7 +44,7 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v5
         with:
@@ -104,7 +104,7 @@ jobs:
       run:
         working-directory: docs-site
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-node@v4
         with:
diff --git a/.github/workflows/release-check.yml b/.github/workflows/release-check.yml
index 92252ab..051e06f 100644
--- a/.github/workflows/release-check.yml
+++ b/.github/workflows/release-check.yml
@@ -17,7 +17,7 @@ jobs:
   artifacts:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
diff --git a/.github/workflows/secret-patterns.yml b/.github/workflows/secret-patterns.yml
index c0f0b77..55b3faa 100644
--- a/.github/workflows/secret-patterns.yml
+++ b/.github/workflows/secret-patterns.yml
@@ -16,7 +16,7 @@ jobs:
   scan:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0