diff --git a/tests/tests.yml b/tests/tests.yml
index e0d81a8..0db68e6 100644
--- a/tests/tests.yml
+++ b/tests/tests.yml
@@ -11,6 +11,9 @@
     - smoke:
         dir: python/smoke
         run: VERSION=3.7 ./venv.sh
+    - debugsmoke:
+        dir: python/smoke
+        run: PYTHON=python3-debug TOX=false VERSION=3.7 ./venv.sh
     - selftest:
         dir: python/selftest
         run: VERSION=3.7 X="-x test_wsgiref" ./parallel.sh