diff --git a/.github/workflows/CacheNotebooks.yml b/.github/workflows/CacheNotebooks.yml
index c8599d13f26..f89560d8158 100644
--- a/.github/workflows/CacheNotebooks.yml
+++ b/.github/workflows/CacheNotebooks.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - name: Checkout caching branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: tutorial_notebooks
 
diff --git a/.github/workflows/DocPreviewCleanup.yml b/.github/workflows/DocPreviewCleanup.yml
index 66d0b342b2e..0850369c9cc 100644
--- a/.github/workflows/DocPreviewCleanup.yml
+++ b/.github/workflows/DocPreviewCleanup.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: gh-pages
 
diff --git a/.github/workflows/Documenter.yml b/.github/workflows/Documenter.yml
index 6b557960c89..129c41a3b5c 100644
--- a/.github/workflows/Documenter.yml
+++ b/.github/workflows/Documenter.yml
@@ -33,7 +33,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: '1.9'
diff --git a/.github/workflows/FormatCheck.yml b/.github/workflows/FormatCheck.yml
index 628d938dd76..ce46360b832 100644
--- a/.github/workflows/FormatCheck.yml
+++ b/.github/workflows/FormatCheck.yml
@@ -20,7 +20,7 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install JuliaFormatter and format
         # This will use the latest version by default but you can set the version like so:
         #
diff --git a/.github/workflows/Invalidations.yml b/.github/workflows/Invalidations.yml
index ba81f83e0ad..18048d26be8 100644
--- a/.github/workflows/Invalidations.yml
+++ b/.github/workflows/Invalidations.yml
@@ -19,12 +19,12 @@ jobs:
     - uses: julia-actions/setup-julia@v1
       with:
         version: '1'
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: julia-actions/julia-buildpkg@v1
     - uses: julia-actions/julia-invalidations@v1
       id: invs_pr
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: ${{ github.event.repository.default_branch }}
     - uses: julia-actions/julia-buildpkg@v1
diff --git a/.github/workflows/ReviewChecklist.yml b/.github/workflows/ReviewChecklist.yml
index 959a04752d7..d8854411804 100644
--- a/.github/workflows/ReviewChecklist.yml
+++ b/.github/workflows/ReviewChecklist.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Add review checklist
         uses: trixi-framework/add-pr-review-checklist@v1
         with:
diff --git a/.github/workflows/SpellCheck.yml b/.github/workflows/SpellCheck.yml
index e608dc8d7c1..eae6d8e0be9 100644
--- a/.github/workflows/SpellCheck.yml
+++ b/.github/workflows/SpellCheck.yml
@@ -8,6 +8,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Actions Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check spelling
         uses: crate-ci/typos@v1.16.15
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index c5c95558c8c..2ea30d6fddb 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -15,7 +15,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - run: |
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4790f93d913..cf8107736e9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -101,7 +101,7 @@ jobs:
             arch: x64
             trixi_test: threaded
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
@@ -175,7 +175,7 @@ jobs:
       # Instead, we use the more tedious approach described above.
       # At first, we check out the repository and download all artifacts
       # (and list files for debugging).
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/download-artifact@v3
       - run: ls -R
       # Next, we merge the individual coverage files and upload