diff --git a/.github/workflows/push_tests.yml b/.github/workflows/push_tests.yml
index 749da4dea81a..567cd5f5b0d4 100644
--- a/.github/workflows/push_tests.yml
+++ b/.github/workflows/push_tests.yml
@@ -17,6 +17,7 @@ jobs:
   run_slow_tests:
     strategy:
       fail-fast: false
+      max-parallel: 1
       matrix:
         config:
           - name: Slow PyTorch CUDA tests on Ubuntu