diff --git a/.github/workflows/build-and-push-demo-docker.yml b/.github/workflows/build-and-push-demo-docker.yml
index 7f6baf20..318a5fc6 100644
--- a/.github/workflows/build-and-push-demo-docker.yml
+++ b/.github/workflows/build-and-push-demo-docker.yml
@@ -16,6 +16,12 @@ jobs:
       contents: read
       packages: write
     steps:
+      - name: Free Disk Space (Ubuntu)
+        uses: jlumbroso/free-disk-space@main
+        with:
+            # this might remove tools that are actually needed,
+            # when set to "true" but frees about 6 GB
+            tool-cache: true
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Log in to the Container registry