diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..1a218f5
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,15 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions" # See documentation for possible values
+    directory: ".github/workflows" # Location of package manifests
+    schedule:
+      interval: "monthly"
+    groups:
+      actions:
+        patterns:
+          - "*"
diff --git a/.github/workflows/run-benchmarks.yml b/.github/workflows/run-benchmarks.yml
index d7958fe..cdba3c3 100644
--- a/.github/workflows/run-benchmarks.yml
+++ b/.github/workflows/run-benchmarks.yml
@@ -19,8 +19,8 @@ jobs:
         numpy-version: [1.17.4]
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
+    - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938  # v4.2.0
+    - uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3  # v5.2.0
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
@@ -52,7 +52,7 @@ jobs:
         # plots.
         ./make.py plots
     - name: Archive code coverage results
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874  # v4.4.0
       with:
         name: benchmark-results
         path: output/
@@ -63,12 +63,12 @@ jobs:
     if: ${{ github.ref == 'refs/heads/main' }}
     steps:
     - name: Download results
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16  # v4.1.8
       with:
         name: benchmark-results
         path: output
     - name: Deploy results
-      uses: JamesIves/github-pages-deploy-action@3.7.1
+      uses: JamesIves/github-pages-deploy-action@4bcb0dacb6b13c279e55b2a8cd3ddd6271611a09  # v4.6.5
       with:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         BRANCH: gh-pages