diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f140ab..933f209 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
@@ -40,7 +40,7 @@ jobs:
     env:
       kind-version: v0.17.0
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
@@ -64,7 +64,7 @@ jobs:
   actionlint:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Check workflow files
       run: |
         echo "::add-matcher::.github/actionlint-matcher.json"
@@ -74,7 +74,7 @@ jobs:
   codeql:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.