diff --git a/Makefile b/Makefile
index fc59bbf..43fe1a6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,15 +1,19 @@
+.PHONY: help
+help:  ## Show this help.
+	@egrep '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-22s\033[0m %s\n", $$1, $$2}'
+
 .PHONY: install
-install:
+install:  ## Install dependencies.
 	npm install
 
 .PHONY: lint
-lint:
+lint:  ## Lint code.
 	npm run lint
 
 .PHONY: test
-test:
+test:  ## Run tests.
 	npm run test
 
 .PHONY: build
-build:
+build:  ## Build code for distribution.
 	npm run build