diff --git a/Makefile b/Makefile
index ed7f73f..709ac04 100644
--- a/Makefile
+++ b/Makefile
@@ -65,6 +65,8 @@ install-source-dev-and-test: venv
 
 # Install from source for production (non‑editable).
 install-source-prod: venv
+	@echo "Deleting tests from source code for production..."
+	rm -rf make_post_sell/tests
 	@echo "Installing make_post_sell from source for production (non‑editable)..."
 	$(PIP) install .
 	$(PIP) install --upgrade -r requirements-prod.txt