diff --git a/.github/workflows/run_tests_with_gpu.yml b/.github/workflows/run_tests_with_gpu.yml
index aaf103fd..b377292b 100644
--- a/.github/workflows/run_tests_with_gpu.yml
+++ b/.github/workflows/run_tests_with_gpu.yml
@@ -3,6 +3,10 @@ name: Run Tests with GPU
 on:
   workflow_dispatch: # Allows for manual triggering
 
+concurrency:
+  group: run-tests-gpu # Fixed group name to ensure only one instance runs
+  cancel-in-progress: false
+
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -30,4 +34,4 @@ jobs:
     
     - name: Run tests with GPU
       run: |
-        HF_TOKEN=${{ secrets.HF_TOKEN }} dstack apply -f tests.dstack.yml --force -y
\ No newline at end of file
+        HF_TOKEN=${{ secrets.HF_TOKEN }} dstack apply -f tests.dstack.yml --force -y