diff --git a/.github/workflows/CommonCI.yml b/.github/workflows/CommonCI.yml
index bc6ccde3ed..a87f7fc392 100644
--- a/.github/workflows/CommonCI.yml
+++ b/.github/workflows/CommonCI.yml
@@ -51,7 +51,7 @@ jobs:
         run: sudo rm -rf /opt/*
         if: ${{ startsWith(inputs.os, 'ubuntu-') && inputs.localjll }}
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set TMPDIR and create directory
         # We have to use `${GITHUB_WORKSPACE}` instead of `github.workspace` because GitHub
@@ -107,7 +107,7 @@ jobs:
           cp LocalPreferences.toml test/
 
       # Compile Julia if assertions are enabled
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         if: ${{ inputs.assertions }}
         with:
           repository: "JuliaLang/julia"
diff --git a/.github/workflows/Documenter.yaml b/.github/workflows/Documenter.yaml
index bf4bd0cba0..8d4219eb02 100644
--- a/.github/workflows/Documenter.yaml
+++ b/.github/workflows/Documenter.yaml
@@ -34,7 +34,7 @@ jobs:
       group: ${{ github.workflow }}-${{ github.ref }}
       cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1.11"
diff --git a/.github/workflows/PreviewCleanup.yml b/.github/workflows/PreviewCleanup.yml
index 72f63c45e0..e531d5aa6c 100644
--- a/.github/workflows/PreviewCleanup.yml
+++ b/.github/workflows/PreviewCleanup.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 584e79e3dd..b6e6ba97d0 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -39,7 +39,7 @@ jobs:
           - linux-x86-ct6e-180-4tpu
           - linux-x86-a2-48-a100-4gpu
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1.11"
@@ -74,7 +74,7 @@ jobs:
     needs: benchmark
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1"
diff --git a/.github/workflows/build-reactantjll.yml b/.github/workflows/build-reactantjll.yml
index 03aa64c7ad..f07f240b24 100644
--- a/.github/workflows/build-reactantjll.yml
+++ b/.github/workflows/build-reactantjll.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Extract ENZYMEXLA_COMMIT from WORKSPACE
         id: extract_enzyme_jax_commit
diff --git a/.github/workflows/format-check-bazel.yml b/.github/workflows/format-check-bazel.yml
index 520e80d8f8..4c1dcb19ba 100644
--- a/.github/workflows/format-check-bazel.yml
+++ b/.github/workflows/format-check-bazel.yml
@@ -7,7 +7,7 @@ jobs:
     name: Formatting Bazel files check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Setup buildifier
       uses: jbajic/setup-buildifier@v1
diff --git a/.github/workflows/format-check-cpp.yml b/.github/workflows/format-check-cpp.yml
index 83179e3aee..4fcd776077 100644
--- a/.github/workflows/format-check-cpp.yml
+++ b/.github/workflows/format-check-cpp.yml
@@ -25,7 +25,7 @@ jobs:
   code-style-cpp:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: DoozyX/clang-format-lint-action@v0.20
         with:
           source: 'deps'
diff --git a/.github/workflows/format-pr-bazel.yml b/.github/workflows/format-pr-bazel.yml
index ff687dd70c..3122b49af4 100644
--- a/.github/workflows/format-pr-bazel.yml
+++ b/.github/workflows/format-pr-bazel.yml
@@ -10,7 +10,7 @@ jobs:
     name: Formatting Bazel files check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Setup buildifier
       uses: jbajic/setup-buildifier@v1
diff --git a/.github/workflows/format-pr.yml b/.github/workflows/format-pr.yml
index b795c85789..1be8d56709 100644
--- a/.github/workflows/format-pr.yml
+++ b/.github/workflows/format-pr.yml
@@ -16,7 +16,7 @@ jobs:
         with:
           version: '1.10'
       - uses: julia-actions/cache@v2
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: main
       - name: Install JuliaFormatter.jl
diff --git a/.github/workflows/regenerate-mlir-bindings.yml b/.github/workflows/regenerate-mlir-bindings.yml
index be965af7ae..17dfbfd10c 100644
--- a/.github/workflows/regenerate-mlir-bindings.yml
+++ b/.github/workflows/regenerate-mlir-bindings.yml
@@ -29,7 +29,7 @@ jobs:
           # Share repository cache between workflows.
           repository-cache: true
           bazelisk-version: 1.x
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install JuliaFormatter.jl
         shell: julia --color=yes {0}
         run: |