diff --git a/.github/workflows/autopush.yml b/.github/workflows/autopush.yml
index f0b30a9c..e1dfec1a 100644
--- a/.github/workflows/autopush.yml
+++ b/.github/workflows/autopush.yml
@@ -10,7 +10,7 @@ jobs:
         if: startsWith(github.repository, 'inducer/')
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -   run: |
                 curl -L -O https://tiker.net/ci-support-v0
                 . ./ci-support-v0
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 876da58d..0d26b196 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
         name: Ruff
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -   uses: actions/setup-python@v5
         -   name: "Main Script"
             run: |
@@ -29,14 +29,14 @@ jobs:
         name: Typos
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -   uses: crate-ci/typos@master
 
     validate_cff:
         name: Validate CITATION.cff
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -   uses: actions/setup-python@v5
             with:
                 python-version: '3.x'
@@ -48,7 +48,7 @@ jobs:
         name: Pylint
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -
             uses: actions/setup-python@v5
             with:
@@ -62,7 +62,7 @@ jobs:
     basedpyright:
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -   uses: actions/setup-python@v5
             with:
                 python-version: '3.x'
@@ -85,7 +85,7 @@ jobs:
                 python-version: ["3.10", "3.12", "3.x", "pypy3.10"]
                 os: [ubuntu-latest, macos-latest]
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -
             uses: actions/setup-python@v5
             with:
@@ -108,7 +108,7 @@ jobs:
         name: Pytest without Numpy
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -
             uses: actions/setup-python@v5
             with:
@@ -123,7 +123,7 @@ jobs:
     #    name: Examples Py3
     #    runs-on: ubuntu-latest
     #    steps:
-    #    -   uses: actions/checkout@v4
+    #    -   uses: actions/checkout@v5
     #    -
     #        uses: actions/setup-python@v5
     #        with:
@@ -143,7 +143,7 @@ jobs:
         name: Tests for downstream project ${{ matrix.downstream_project }}
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -   name: "Main Script"
             env:
                 DOWNSTREAM_PROJECT: ${{ matrix.downstream_project }}
@@ -156,7 +156,7 @@ jobs:
         name: Documentation
         runs-on: ubuntu-latest
         steps:
-        -   uses: actions/checkout@v4
+        -   uses: actions/checkout@v5
         -
             uses: actions/setup-python@v5
             with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5ff29e8a..4d4031ab 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         persist-credentials: false
     - name: Set up Python