diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d80b6b4..9b4c8af 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,7 +11,7 @@ jobs:
   build:
     name: "Build libsupermesh with Ubuntu spatialindex"
     # The type of runner that the job will run on
-    runs-on: self-hosted
+    runs-on: [self-hosted, Linux]
     # The docker container to use.
     container:
       image: firedrakeproject/firedrake-env:latest