diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 46b8177..c114355 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ on:
 jobs:
   tests:
     name: 'Tests'
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     permissions:
       contents: read
     steps:
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 1717850..34b58ef 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -4,7 +4,7 @@ on:
     types: [published]
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     permissions:
       contents: read
       id-token: write