diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 68be9274..b80b26b2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,6 +15,9 @@ jobs:
 
   test:
     runs-on: ubuntu-latest
+    env:
+      OMP_NUM_THREADS: 1
+      MKL_NUM_THREADS: 1
     strategy:
       fail-fast: false
       matrix: