diff --git a/.github/workflows/slowtests.yml b/.github/workflows/slowtests.yml
index 4a4f08005..f9fd3e817 100644
--- a/.github/workflows/slowtests.yml
+++ b/.github/workflows/slowtests.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        branch: [master, main]
+        branch: [master, v4]
     if: github.repository_owner == 'explosion'
     runs-on: ubuntu-latest
     steps: