diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8440d15b..80afa2af 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -56,7 +56,7 @@ jobs:
           - kfp-viewer
           - kfp-viz
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: python3 -m pip install tox
       - run: tox -e ${{ matrix.charm }}-lint
 
@@ -76,7 +76,7 @@ jobs:
           - kfp-viewer
           - kfp-viz
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: python3 -m pip install tox
       - run: tox -e ${{ matrix.charm }}-unit
 
@@ -173,7 +173,7 @@ jobs:
       - name: Maximise GH runner space
         uses: jlumbroso/free-disk-space@v1.3.1
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup operator environment
         uses: charmed-kubernetes/actions-operator@main
@@ -227,7 +227,7 @@ jobs:
         uses: jlumbroso/free-disk-space@v1.3.1
 
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup operator environment
         uses: charmed-kubernetes/actions-operator@main
diff --git a/.github/workflows/promote.yaml b/.github/workflows/promote.yaml
index 8a33b385..7ad54fde 100644
--- a/.github/workflows/promote.yaml
+++ b/.github/workflows/promote.yaml
@@ -19,7 +19,7 @@ jobs:
     name: Promote charm
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Release charm to channel
         # TODO: use canonical/charming-actions/promote-charm?
         uses: canonical/charming-actions/release-charm@2.6.2