diff --git a/.github/workflows/camkes-vm-deploy.yml b/.github/workflows/camkes-vm-deploy.yml
index 43b4d63a..dcf7d08e 100644
--- a/.github/workflows/camkes-vm-deploy.yml
+++ b/.github/workflows/camkes-vm-deploy.yml
@@ -46,7 +46,7 @@ jobs:
         xml: ${{ needs.code.outputs.xml }}
         march: ${{ matrix.march }}
     - name: Upload images
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: images-${{ matrix.march }}
         path: '*-images.tar.gz'
@@ -69,7 +69,7 @@ jobs:
           repository: seL4/machine_queue
           path: machine_queue
       - name: Download image
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: images-${{ matrix.march }}
       - name: Run
diff --git a/.github/workflows/test-hw.yml b/.github/workflows/test-hw.yml
index 64dbbc2a..136f72a9 100644
--- a/.github/workflows/test-hw.yml
+++ b/.github/workflows/test-hw.yml
@@ -54,7 +54,7 @@ jobs:
         xml: ${{ needs.code.outputs.xml }}
         march: ${{ matrix.march }}
     - name: Upload images
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: images-${{ matrix.march }}
         path: '*-images.tar.gz'
@@ -84,7 +84,7 @@ jobs:
           repository: seL4/machine_queue
           path: machine_queue
       - name: Download image
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: images-${{ matrix.march }}
       - name: Run