diff --git a/.github/workflows/docker-publish-cpu.yml b/.github/workflows/docker-publish-cpu.yml
index 6ed78afe46..a8ac7e8104 100644
--- a/.github/workflows/docker-publish-cpu.yml
+++ b/.github/workflows/docker-publish-cpu.yml
@@ -19,7 +19,9 @@ jobs:
   # See also https://evilmartians.com/chronicles/build-images-on-github-actions-with-docker-layer-caching
   build-docker-image:
     name: "Build Docker Image"
-    runs-on: ubuntu-22.04 # runs-on: ubuntu-latest
+    #runs-on: ubuntu-22.04 # runs-on: ubuntu-latest
+    #runs-on: github-ubuntu-16core # NB: Premium GitHub runner with more cores
+    runs-on: github-ubuntu-64core # NB: Premium GitHub runner with more cores
     if: github.event_name == 'push'
     permissions:
       packages: write
diff --git a/.github/workflows/docker-publish-gpu.yml b/.github/workflows/docker-publish-gpu.yml
index decb977b6a..7ac6d777db 100644
--- a/.github/workflows/docker-publish-gpu.yml
+++ b/.github/workflows/docker-publish-gpu.yml
@@ -20,7 +20,8 @@ jobs:
   build-docker-image:
     name: "Build Docker Image"
     #runs-on: ubuntu-22.04 # runs-on: ubuntu-latest
-    runs-on: github-ubuntu-16core # NB: Premium GitHub runner with more cores
+    #runs-on: github-ubuntu-16core # NB: Premium GitHub runner with more cores
+    runs-on: github-ubuntu-64core # NB: Premium GitHub runner with more cores
     if: github.event_name == 'push'
     permissions:
       packages: write