diff --git a/.github/workflows/docker-constructive.yaml b/.github/workflows/docker-constructive.yaml
index d4943a61c..11853f8f2 100644
--- a/.github/workflows/docker-constructive.yaml
+++ b/.github/workflows/docker-constructive.yaml
@@ -26,10 +26,10 @@ jobs:
         include:
           - platform: linux/amd64
             arch: amd64
-            runner: blacksmith-4vcpu-ubuntu-2404      # x86_64
+            runner: ubuntu-latest      # x86_64
           - platform: linux/arm64
             arch: arm64
-            runner: blacksmith-4vcpu-ubuntu-2404-arm  # native arm
+            runner: ubuntu-latest  # arm builds via QEMU
     runs-on: ${{ matrix.runner }}
 
     permissions:
@@ -118,7 +118,7 @@ jobs:
   # multi-arch manifest for each tag.
   publish-constructive-manifest:
     if: github.event_name != 'pull_request'
-    runs-on: blacksmith-2vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     needs: build-push-constructive
 
     permissions:
diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index d39888482..0180fa5b4 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -41,7 +41,7 @@ concurrency:
 jobs:
   build-push:
     if: github.event_name != 'pull_request' || !github.event.pull_request.draft
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
 
     permissions:
       contents: read
diff --git a/.github/workflows/notify-e2e.yml b/.github/workflows/notify-e2e.yml
index 64e721ba7..e12a58c6a 100644
--- a/.github/workflows/notify-e2e.yml
+++ b/.github/workflows/notify-e2e.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   trigger-tests:
-    runs-on: blacksmith-2vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     steps:
       - name: Trigger submodule update in constructive-hub
         uses: actions/github-script@v7