diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1d82a57..4c62d6f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,9 +19,9 @@ jobs:
         os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
         python-version: ['3.11', '3.12']
     steps:
-      - uses: actions/checkout@latest
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@latest
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
       - name: Python info
@@ -44,9 +44,9 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@latest
+      - uses: actions/checkout@v4
       - name: Set up Python 3.11
-        uses: actions/setup-python@latest
+        uses: actions/setup-python@v5
         with:
           python-version: 3.11
       - name: Python info
diff --git a/.github/workflows/cffconvert.yml b/.github/workflows/cffconvert.yml
index 0e9a745..6639829 100644
--- a/.github/workflows/cffconvert.yml
+++ b/.github/workflows/cffconvert.yml
@@ -14,7 +14,7 @@ jobs:
     name: "cffconvert"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@latest
+      - uses: actions/checkout@v4
         name: Check out a copy of the repository
 
       - name: Check whether the citation metadata from CITATION.cff is valid
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 240f32d..cd593df 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -15,9 +15,9 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-      - uses: actions/checkout@latest
+      - uses: actions/checkout@v4
       - name: Set up Python 3.11
-        uses: actions/setup-python@latest
+        uses: actions/setup-python@v5
         with:
           python-version: 3.11
       - name: Python info
diff --git a/.github/workflows/markdown-link-check.yml b/.github/workflows/markdown-link-check.yml
index 9b004da..2e4beaf 100644
--- a/.github/workflows/markdown-link-check.yml
+++ b/.github/workflows/markdown-link-check.yml
@@ -14,7 +14,7 @@ jobs:
     name: Check markdown links
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@latest
+    - uses: actions/checkout@v4
     - uses: gaurav-nelson/github-action-markdown-link-check@v1
       with:
         config-file: '.mlc-config.json'
diff --git a/.github/workflows/sonarcloud.yml b/.github/workflows/sonarcloud.yml
index 9fb5153..fc56327 100644
--- a/.github/workflows/sonarcloud.yml
+++ b/.github/workflows/sonarcloud.yml
@@ -15,11 +15,11 @@ jobs:
     name: SonarCloud
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@latest
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
       - name: Set up Python
-        uses: actions/setup-python@latest
+        uses: actions/setup-python@v5
         with:
           python-version: 3.9
       - name: Python info