diff --git a/.github/workflows/analyze-releases-for-adk-docs-updates.yml b/.github/workflows/analyze-releases-for-adk-docs-updates.yml
index 21414ae534..d7016fb702 100644
--- a/.github/workflows/analyze-releases-for-adk-docs-updates.yml
+++ b/.github/workflows/analyze-releases-for-adk-docs-updates.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/check-file-contents.yml b/.github/workflows/check-file-contents.yml
index bb575e0f20..6c02d904c7 100644
--- a/.github/workflows/check-file-contents.yml
+++ b/.github/workflows/check-file-contents.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 2
 
diff --git a/.github/workflows/discussion_answering.yml b/.github/workflows/discussion_answering.yml
index d9bfffc361..3957727143 100644
--- a/.github/workflows/discussion_answering.yml
+++ b/.github/workflows/discussion_answering.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/isort.yml b/.github/workflows/isort.yml
index b8b24da5ce..a1967b1f53 100644
--- a/.github/workflows/isort.yml
+++ b/.github/workflows/isort.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 2
 
diff --git a/.github/workflows/pr-triage.yml b/.github/workflows/pr-triage.yml
index 55b088b505..6557820f04 100644
--- a/.github/workflows/pr-triage.yml
+++ b/.github/workflows/pr-triage.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/pyink.yml b/.github/workflows/pyink.yml
index 0822757fa0..bcd872bda8 100644
--- a/.github/workflows/pyink.yml
+++ b/.github/workflows/pyink.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 2
 
diff --git a/.github/workflows/python-unit-tests.yml b/.github/workflows/python-unit-tests.yml
index 3fc6bd943f..a19e893469 100644
--- a/.github/workflows/python-unit-tests.yml
+++ b/.github/workflows/python-unit-tests.yml
@@ -29,7 +29,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
diff --git a/.github/workflows/stale-bot.yml b/.github/workflows/stale-bot.yml
index 6948b56459..2e74e5e51f 100644
--- a/.github/workflows/stale-bot.yml
+++ b/.github/workflows/stale-bot.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/triage.yml b/.github/workflows/triage.yml
index 46153f413a..d19a0e9197 100644
--- a/.github/workflows/triage.yml
+++ b/.github/workflows/triage.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/upload-adk-docs-to-vertex-ai-search.yml b/.github/workflows/upload-adk-docs-to-vertex-ai-search.yml
index bce7598c2f..30b47a12d1 100644
--- a/.github/workflows/upload-adk-docs-to-vertex-ai-search.yml
+++ b/.github/workflows/upload-adk-docs-to-vertex-ai-search.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Clone adk-docs repository
         run: git clone https://github.com/google/adk-docs.git /tmp/adk-docs