diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index 8975d40..d24a1bf 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -35,9 +35,9 @@ jobs:
         name: "Python: ${{ matrix.py }}-${{ matrix.architecture }} on ${{ matrix.os }}"
         runs-on: ${{ matrix.os }}
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
             - name: Setup python
-              uses: actions/setup-python@v2
+              uses: actions/setup-python@v5
               with:
                   python-version: ${{ matrix.py }}
                   architecture: ${{ matrix.architecture }}
@@ -50,9 +50,9 @@ jobs:
         # Assume coverage is identical across supported versions of Python.
         # Choose the latest Python.
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
             - name: Setup python
-              uses: actions/setup-python@v2
+              uses: actions/setup-python@v5
               with:
                   python-version: 3.12
                   architecture: x64
@@ -62,9 +62,9 @@ jobs:
         runs-on: ubuntu-latest
         name: Build the documentation
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
             - name: Setup python
-              uses: actions/setup-python@v2
+              uses: actions/setup-python@v5
               with:
                   python-version: 3.12
                   architecture: x64