diff --git a/Makefile b/Makefile
index aedbd6a..a0d3f44 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ install: $(VENV)/bin/activate
 	$(PIP) install --quiet -r requirements-dev.txt
 
 run: install
-	PORT=5000 $(PYTHON) app.py
+	PORT=9912 $(PYTHON) app.py
 
 test: install
 	$(PYTEST) tests/ -v