diff --git a/.github/workflows/run_pytest.yml b/.github/workflows/run_pytest.yml
index 6040093c..a10726b3 100644
--- a/.github/workflows/run_pytest.yml
+++ b/.github/workflows/run_pytest.yml
@@ -4,7 +4,7 @@ on: [push]
 
 jobs:  
   build:  
-    runs-on: ubuntu-18.04  
+    runs-on: self-hosted
     strategy:  
       matrix:  
         python-version: ["3.7"]