diff --git a/Makefile b/Makefile
index 58ea8aa..90dadb8 100644
--- a/Makefile
+++ b/Makefile
@@ -5,3 +5,7 @@ help: ## display this help
 
 test: ## run pytest
 	python -m pytest
+
+reset: ## delete all items in tests/ and update each source once
+	rm -v tests/*/*.item
+	find tests -name intake.json -printf "%h\n" | cut -c7- | xargs -n 1 python -m intake update -d tests -s