diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f9d94a676..c5feac8fc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,10 +29,12 @@ jobs:
       run: make check
 
   test:
-    runs-on: ubuntu-latest
+    runs-on: ${{ fromJSON(github.repository == 'filecoin-project/builtin-actors' && '["self-hosted", "linux", "x64", "4xlarge"]' || '"ubuntu-latest"') }}
     steps:
     - name: Checking out
       uses: actions/checkout@v3
+    - if: env.RUNNER_ENVIRONMENT != 'github-hosted'
+      uses: dtolnay/rust-toolchain@stable
     - name: Running tests
       run: |
         cargo test --locked --all --no-fail-fast --exclude=fil_builtin_actors_bundle