diff --git a/.github/workflows/clearcache.yml b/.github/workflows/clearcache.yml
index d2295b3..4d19306 100644
--- a/.github/workflows/clearcache.yml
+++ b/.github/workflows/clearcache.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Check out code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Cleanup
       run: |
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 8aad8d6..14fb936 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 457ec8f..f7d936f 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -13,7 +13,7 @@ jobs:
       DISPLAY: :99
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install Poetry
       run: pipx install poetry
diff --git a/.github/workflows/draft-pdf.yml b/.github/workflows/draft-pdf.yml
index dc5fcea..5be052d 100644
--- a/.github/workflows/draft-pdf.yml
+++ b/.github/workflows/draft-pdf.yml
@@ -16,7 +16,7 @@ jobs:
     name: Paper Draft
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Build draft PDF
       uses: openjournals/openjournals-draft-action@master
       with:
diff --git a/.github/workflows/languagetool.yml b/.github/workflows/languagetool.yml
index 6e1b518..49d5a0c 100644
--- a/.github/workflows/languagetool.yml
+++ b/.github/workflows/languagetool.yml
@@ -8,7 +8,7 @@ jobs:
   languagetool_check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: reviewdog/action-languagetool@v1
       with:
         reporter: github-pr-review
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 9a3cb25..2874980 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install Poetry
       run: pipx install poetry
     - name: Install Python
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 42c32a9..341d3d8 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install Poetry
       run: pipx install poetry
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1eedd47..c8187bf 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -18,7 +18,7 @@ jobs:
       DISPLAY: :99
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install Poetry
       run: pipx install poetry
@@ -84,7 +84,7 @@ jobs:
       DISPLAY: :99
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install Poetry
       run: pipx install poetry