diff --git a/.github/workflows/build-and-push.yml b/.github/workflows/build-and-push.yml
index 9a8eb5c..842803e 100644
--- a/.github/workflows/build-and-push.yml
+++ b/.github/workflows/build-and-push.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     permissions:
       contents: read
       packages: write  # needed for GHCR
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1992b27..3391cd4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,7 +11,7 @@ permissions:
 
 jobs:
   python-tests:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -21,7 +21,7 @@ jobs:
         run: python -m unittest discover -s tests
 
   go-tests:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     defaults:
       run:
         working-directory: manager