diff --git a/.github/actions/setup-environment/action.yml b/.github/actions/setup-environment/action.yml
index 50ac3dede..4df2b7e7f 100644
--- a/.github/actions/setup-environment/action.yml
+++ b/.github/actions/setup-environment/action.yml
@@ -11,7 +11,7 @@ runs:
   using: "composite"
   steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Generate Cache Key
       id: cache-key
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 0c4e75115..d81e0e11b 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -25,7 +25,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index 2357c8313..c78fbde8b 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -19,7 +19,7 @@ jobs:
   check_untagged_tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: run check
         run: |
           make check-untagged-tests
@@ -30,7 +30,7 @@ jobs:
         test: ["partitioners", "chunkers"]
     runs-on: opensource-linux-8core
     steps:
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: ./.github/actions/setup-environment
@@ -48,7 +48,7 @@ jobs:
   embedders_int_test:
     runs-on: opensource-linux-8core
     steps:
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: ./.github/actions/setup-environment
@@ -74,7 +74,7 @@ jobs:
     runs-on: opensource-linux-8core
     needs: [ check_untagged_tests ]
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: ./.github/actions/setup-environment
@@ -118,7 +118,7 @@ jobs:
     runs-on: opensource-linux-8core
     needs: [ check_untagged_tests ]
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: ./.github/actions/setup-environment
@@ -155,7 +155,7 @@ jobs:
     runs-on: opensource-linux-8core
     needs: [ check_untagged_tests ]
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: ./.github/actions/setup-environment
@@ -195,7 +195,7 @@ jobs:
     runs-on: opensource-linux-8core
     needs: [ check_untagged_tests ]
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: ./.github/actions/setup-environment
@@ -233,7 +233,7 @@ jobs:
     runs-on: opensource-linux-8core
     needs: [ check_untagged_tests ]
     steps:
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: ./.github/actions/setup-environment
@@ -276,7 +276,7 @@ jobs:
     runs-on: opensource-linux-8core
     steps:
     # actions/checkout MUST come before auth
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: ./.github/actions/setup-environment
@@ -341,7 +341,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     # actions/checkout MUST come before auth
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
     - name: Set up Python
       uses: ./.github/actions/setup-environment
       with:
@@ -363,7 +363,7 @@ jobs:
     runs-on: opensource-linux-8core
     steps:
     # actions/checkout MUST come before auth
-    - uses: 'actions/checkout@v4'
+    - uses: 'actions/checkout@v6'
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: ./.github/actions/setup-environment
diff --git a/.github/workflows/ingest-test-fixtures-update-pr.yml b/.github/workflows/ingest-test-fixtures-update-pr.yml
index 0b5b732ad..9817ac19e 100644
--- a/.github/workflows/ingest-test-fixtures-update-pr.yml
+++ b/.github/workflows/ingest-test-fixtures-update-pr.yml
@@ -16,7 +16,7 @@ jobs:
   setup:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - uses: ./.github/actions/setup-environment
         with:
           python-version: ${{ env.PYTHON_VERSION }}
@@ -26,7 +26,7 @@ jobs:
     needs: [setup]
     steps:
       # actions/checkout MUST come before auth
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 75bfc28a1..ca7c668fc 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index ed446703c..89db2065f 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -23,7 +23,7 @@ jobs:
         python-version: [ "3.11", "3.12", "3.13" ]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Install uv
         uses: astral-sh/setup-uv@v5
         with:
@@ -41,14 +41,14 @@ jobs:
   shellcheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: ShellCheck
         uses: ludeeus/action-shellcheck@master
 
   shfmt:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: setup shfmt
         uses: mfinelli/setup-shfmt@v3
       - name: Run shfmt
@@ -57,7 +57,7 @@ jobs:
   check-version:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Run check-version
         run: make check-version
 
@@ -65,7 +65,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # need to checkout otherwise paths-filter will fail on merge-queue trigger
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - if: github.ref != 'refs/heads/main'
         uses: dorny/paths-filter@v3
         id: changes
@@ -86,7 +86,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [ lint ]
     steps:
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -107,7 +107,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [ lint ]
     steps:
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
@@ -127,7 +127,7 @@ jobs:
     needs: [ lint ]
     steps:
       # actions/checkout MUST come before auth
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
@@ -151,7 +151,7 @@ jobs:
     needs: [ lint ]
     steps:
       # actions/checkout MUST come before auth
-      - uses: 'actions/checkout@v4'
+      - uses: 'actions/checkout@v6'
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5