diff --git a/Makefile b/Makefile
index fc064ddd..2c99e59e 100644
--- a/Makefile
+++ b/Makefile
@@ -103,6 +103,11 @@ fmt: ## Run go fmt against code.
 vet: ## Run go vet against code.
 	go vet ./...
 
+.PHONY: tidy
+tidy: ## Run go mod tidy on every mod file in the repo
+	go mod tidy
+	cd ./api && go mod tidy
+
 .PHONY: test
 test: manifests generate fmt vet envtest ginkgo ## Run tests.
 	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" \