diff --git a/.github/workflows/CI-localjll.yml b/.github/workflows/CI-localjll.yml
index 07c8d906b4..f1f123dea7 100644
--- a/.github/workflows/CI-localjll.yml
+++ b/.github/workflows/CI-localjll.yml
@@ -47,7 +47,7 @@ jobs:
       - name: Clean `/opt`
         run: sudo rm -rf /opt/*
         if: ${{ startsWith(matrix.os, 'ubuntu-') }}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set and create TMPDIR
         # We have to use `${GITHUB_WORKSPACE}` instead of `github.workspace` because GitHub
         # is terrible and the two don't match inside containers:
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index ed95ebc933..c7ca2511cd 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -113,7 +113,7 @@ jobs:
         if: ${{ matrix.os != 'windows-latest' }}
         run: |
           echo "TMPDIR=${GITHUB_WORKSPACE}/tmp" >> ${GITHUB_ENV}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Create TMPDIR
         if: ${{ matrix.os != 'windows-latest' }}
         run: |
@@ -123,7 +123,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
       - uses: julia-actions/cache@v2
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         if: ${{ matrix.assertions }}
         with:
           repository: "JuliaLang/julia"
diff --git a/.github/workflows/Documenter.yaml b/.github/workflows/Documenter.yaml
index 4f82218502..a18420c2d4 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@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1"
diff --git a/.github/workflows/PreviewCleanup.yml b/.github/workflows/PreviewCleanup.yml
index 8ecaab80f9..72f63c45e0 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@v4
+        uses: actions/checkout@v5
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 1b3e6af191..12ea6475f2 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@v4
+      - uses: actions/checkout@v5
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1"
diff --git a/.github/workflows/downgrade.yml b/.github/workflows/downgrade.yml
index 72e0b858b5..60dea8e961 100644
--- a/.github/workflows/downgrade.yml
+++ b/.github/workflows/downgrade.yml
@@ -44,7 +44,7 @@ jobs:
     env:
       TMPDIR: ${{ github.workspace }}/tmp
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Create TMPDIR
         run: |
           mkdir -p ${{ env.TMPDIR }}
diff --git a/.github/workflows/format-check-bazel.yml b/.github/workflows/format-check-bazel.yml
index e72fa13a85..520e80d8f8 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@v4
+    - uses: actions/checkout@v5
 
     - 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 d4ec511536..83179e3aee 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@v4
+      - uses: actions/checkout@v5
       - 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 76c5c36f33..ff687dd70c 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@v4
+    - uses: actions/checkout@v5
 
     - name: Setup buildifier
       uses: jbajic/setup-buildifier@v1
diff --git a/.github/workflows/format-pr.yml b/.github/workflows/format-pr.yml
index 2e98059dc8..b795c85789 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@v4
+      - uses: actions/checkout@v5
         with:
           ref: main
       - name: Install JuliaFormatter.jl
diff --git a/.github/workflows/regenerate-mlir-bindings.yml b/.github/workflows/regenerate-mlir-bindings.yml
index f2489ce7f9..5f4825642e 100644
--- a/.github/workflows/regenerate-mlir-bindings.yml
+++ b/.github/workflows/regenerate-mlir-bindings.yml
@@ -26,7 +26,7 @@ jobs:
           # Share repository cache between workflows.
           repository-cache: true
           bazelisk-version: 1.x
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install JuliaFormatter.jl
         shell: julia --color=yes {0}
         run: |