diff --git a/.github/workflows/build-documentation.yml b/.github/workflows/build-documentation.yml
index 7d4fdc489..b8f3f2330 100644
--- a/.github/workflows/build-documentation.yml
+++ b/.github/workflows/build-documentation.yml
@@ -46,7 +46,7 @@ jobs:
           run: make html
 
       - name: Upload html artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: opendylan-doc-html
           path: documentation/build/html/
diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index 77001805d..0eb2ec55d 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -31,7 +31,7 @@ jobs:
       - name: "Build with batteries"
         run: ./build/unix/release-with-batteries.sh
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         with:
           name: opendylan-release-tarball
           # The - in the path is to omit the opendylan.tar.bz2 symlink.