diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 01b67c6de05b..69192db0c4c6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: astral-sh/setup-uv@v6
         with:
           enable-cache: true
diff --git a/.github/workflows/devcontainer_ci.yml b/.github/workflows/devcontainer_ci.yml
index c0b26bb77da6..71623e5e6e69 100644
--- a/.github/workflows/devcontainer_ci.yml
+++ b/.github/workflows/devcontainer_ci.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: devcontainers/ci@v0.3
         with:
           push: never
diff --git a/.github/workflows/directory_writer.yml b/.github/workflows/directory_writer.yml
index 3edb5c91a951..f5167f8d1a58 100644
--- a/.github/workflows/directory_writer.yml
+++ b/.github/workflows/directory_writer.yml
@@ -6,7 +6,7 @@ jobs:
   directory_writer:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v5
diff --git a/.github/workflows/project_euler.yml b/.github/workflows/project_euler.yml
index eaf4150e4eaa..8b8cb2a1e68f 100644
--- a/.github/workflows/project_euler.yml
+++ b/.github/workflows/project_euler.yml
@@ -14,7 +14,7 @@ jobs:
   project-euler:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: astral-sh/setup-uv@v6
       - uses: actions/setup-python@v5
         with:
@@ -24,7 +24,7 @@ jobs:
   validate-solutions:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: astral-sh/setup-uv@v6
       - uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml
index ec9f0202bd7e..7bcc2850782f 100644
--- a/.github/workflows/ruff.yml
+++ b/.github/workflows/ruff.yml
@@ -11,6 +11,6 @@ jobs:
   ruff:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: astral-sh/setup-uv@v6
       - run: uvx ruff check --output-format=github .
diff --git a/.github/workflows/sphinx.yml b/.github/workflows/sphinx.yml
index 2010041d80c5..a5502a586297 100644
--- a/.github/workflows/sphinx.yml
+++ b/.github/workflows/sphinx.yml
@@ -25,7 +25,7 @@ jobs:
   build_docs:
     runs-on: ubuntu-24.04-arm
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: astral-sh/setup-uv@v6
       - uses: actions/setup-python@v5
         with: