diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 448fc94fb6f20d..62421399b4b4c1 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -116,7 +116,8 @@ jobs:
             - name: Run Test Suites
               timeout-minutes: 5
               run: |
-                  scripts/tests/test_suites.sh
+                  # Force 1 iteration for now until we sort out our threading issues.
+                  scripts/tests/test_suites.sh 1
             - name: Uploading core files
               uses: actions/upload-artifact@v2
               if: ${{ failure() }}