diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e3b75537..5663319f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
@@ -118,7 +118,7 @@ jobs:
       matrix:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
@@ -159,7 +159,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-node@v7
         with:
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 15089281..43221941 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -23,7 +23,7 @@ jobs:
       matrix:
         python-version: ["3.11", "3.12"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
@@ -149,7 +149,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
@@ -218,7 +218,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
@@ -287,7 +287,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 070f78a7..7c82803d 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -18,7 +18,7 @@ jobs:
     permissions:
       contents: read  # checkout reads the tagged ref
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
@@ -51,7 +51,7 @@ jobs:
     permissions:
       contents: read  # checkout reads the tagged ref for tests/ + tools/
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/site-deploy.yml b/.github/workflows/site-deploy.yml
index 3c49abd5..3b1e2b4e 100644
--- a/.github/workflows/site-deploy.yml
+++ b/.github/workflows/site-deploy.yml
@@ -46,7 +46,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/usermanuals-validate.yml b/.github/workflows/usermanuals-validate.yml
index 2361d69b..f8187479 100644
--- a/.github/workflows/usermanuals-validate.yml
+++ b/.github/workflows/usermanuals-validate.yml
@@ -34,7 +34,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-python@v6
         with: