diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6effef13..3e25bccd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -217,7 +217,10 @@ jobs:
     - name: Run unit tests
       if: ${{ matrix.build == 'meson' }}
       run: |
-         meson test -C ${{ env.BUILD_DIR }} --print-errorlogs --no-rebuild --num-processes 2 -t 2
+        meson test -C ${{ env.BUILD_DIR }} --print-errorlogs --no-rebuild
+      env:
+        OMP_NUM_THREADS: 1 
+
 
     - name: Run unit tests
       if: ${{ matrix.build == 'cmake' }}