diff --git a/.github/workflows/buildwheels.yml b/.github/workflows/buildwheels.yml
index 6abc5fdd..73ddd6d9 100644
--- a/.github/workflows/buildwheels.yml
+++ b/.github/workflows/buildwheels.yml
@@ -18,7 +18,7 @@ jobs:
   debug_build_ok:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
           fetch-depth: 0  # https://github.com/pypa/setuptools_scm/issues/480
@@ -28,7 +28,7 @@ jobs:
   zenodo_json:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: notiz-dev/github-action-json-property@release
         with: 
           path: '.zenodo.json'
@@ -44,7 +44,7 @@ jobs:
         os: [ubuntu-latest, ubuntu-24.04-arm, macos-14, macos-15, macos-15-intel, windows-latest]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
           fetch-depth: 0
@@ -95,7 +95,7 @@ jobs:
         os: [ubuntu-latest, ubuntu-24.04-arm, macos-14, macos-15, macos-15-intel, windows-latest]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
           fetch-depth: 0
@@ -132,7 +132,7 @@ jobs:
       name: Check if todos are annotated
 
       steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v7
           with:
             submodules: recursive
             fetch-depth: 0
@@ -164,7 +164,7 @@ jobs:
     name: Make source distribution
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v7
       with:
         fetch-depth: 0
         submodules: recursive
@@ -232,7 +232,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, ubuntu-24.04-arm]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
 
@@ -268,7 +268,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
 
@@ -303,7 +303,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, ubuntu-24.04-arm]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
 
@@ -348,7 +348,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, ubuntu-24.04-arm, macos-15, macos-15-intel, windows-latest]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
 
@@ -436,7 +436,7 @@ jobs:
         os: [ubuntu-latest]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
 
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index d02a4ed2..d10378d9 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -10,7 +10,7 @@ jobs:
   codecov:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
           fetch-depth: 0
diff --git a/.github/workflows/conda.yml b/.github/workflows/conda.yml
index c8eb8f2e..e7140399 100644
--- a/.github/workflows/conda.yml
+++ b/.github/workflows/conda.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v7
         with:
             submodules: recursive
             fetch-depth: 0  # https://github.com/pypa/setuptools_scm/issues/480
diff --git a/.github/workflows/forlint.yml b/.github/workflows/forlint.yml
index 1251875f..8b0fd26d 100644
--- a/.github/workflows/forlint.yml
+++ b/.github/workflows/forlint.yml
@@ -10,7 +10,7 @@ jobs:
    lint:
       runs-on: ubuntu-latest
       steps:
-         - uses: actions/checkout@v2
+         - uses: actions/checkout@v7
          - uses: NOAA-GFDL/simple_lint@v3
            with:
              failure: true
diff --git a/.github/workflows/pdoc.yml b/.github/workflows/pdoc.yml
index 5a7ef6a2..ce532b8f 100644
--- a/.github/workflows/pdoc.yml
+++ b/.github/workflows/pdoc.yml
@@ -17,7 +17,7 @@ jobs:
         platform: [ubuntu-latest]
     runs-on: ${{ matrix.platform }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
           persist-credentials: false
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index 7570992b..82c395ed 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v7
       - name: Set up Python 3.10
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/pylint.yml b/.github/workflows/pylint.yml
index 96f3d18d..735a6d88 100644
--- a/.github/workflows/pylint.yml
+++ b/.github/workflows/pylint.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
         fetch-depth: 0
diff --git a/.github/workflows/urlcheck.yml b/.github/workflows/urlcheck.yml
index d8f07a0a..93efb2d8 100644
--- a/.github/workflows/urlcheck.yml
+++ b/.github/workflows/urlcheck.yml
@@ -10,7 +10,7 @@ jobs:
   url-check:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4.1.6
+      - uses: actions/checkout@v7
       - uses: urlstechie/urlchecker-action@master
         with:
           file_types: .md,.py,.json,.ipynb,.yaml,.yml,.toml,.c,.hpp,.cpp,.F90,.f90,.txt,.dat,.cff