diff --git a/app/Makefile b/app/Makefile
index 86f38c6..e2ff9b8 100644
--- a/app/Makefile
+++ b/app/Makefile
@@ -1,6 +1,15 @@
 .PHONY: build
 build:
+	mkdir -p ./dist
 	GOARCH=amd64 GOOS=darwin go build -o ./dist/a ./a
 	GOARCH=amd64 GOOS=darwin go build -o ./dist/a2 ./a2
 	GOARCH=amd64 GOOS=darwin go build -o ./dist/b ./b
 	GOARCH=amd64 GOOS=darwin go build -o ./dist/control ./control
+
+.PHONY: deptree
+deptree:
+	mkdir -p ./deptree
+	depth ./a > ./deptree/a
+	depth ./a2 > ./deptree/a2
+	depth ./b > ./deptree/b
+	depth ./control > ./deptree/control