diff --git a/.dockerignore b/.dockerignore
index d234be1..370098f 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -2,5 +2,5 @@
 .gitignore
 
 # Other
-bin/*
+build/*
 docs/*
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 15b9a0b..62f7263 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -52,6 +52,6 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          files: bin/*
+          files: build/*
           draft: true
           prerelease: true
diff --git a/.gitignore b/.gitignore
index 14712fb..b044d80 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,7 @@
 *.dll
 *.so
 *.dylib
-bin/
+build/
 
 # IDE
 .idea/
diff --git a/Dockerfile b/Dockerfile
index 483aaf0..8222826 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ COPY . /tun2socks-src
 RUN apk add --no-cache make git \
     && go mod download \
     && make tun2socks \
-    && mv ./bin/tun2socks /tun2socks
+    && mv ./build/tun2socks /tun2socks
 
 FROM alpine:latest
 LABEL org.opencontainers.image.source="https://github.com/xjasonlyu/tun2socks"
diff --git a/Makefile b/Makefile
index 23f7812..3be2bb2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,17 +1,18 @@
-BINARY = tun2socks
-OUTPUT = bin
+BINARY := tun2socks
+MODULE := github.com/xjasonlyu/tun2socks
 
-BUILD_FLAGS   = -v
-BUILD_TAGS    =
-BUILD_COMMIT  = $(shell git describe --dirty --always)
-BUILD_VERSION = $(shell git describe --abbrev=0 --tags HEAD)
+BUILD_DIR     := build
+BUILD_TAGS    :=
+BUILD_FLAGS   := -v
+BUILD_COMMIT  := $(shell git describe --dirty --always)
+BUILD_VERSION := $(shell git describe --abbrev=0 --tags HEAD)
 
-CGO_ENABLED = 0
-GO111MODULE = on
+CGO_ENABLED := 0
+GO111MODULE := on
 
 LDFLAGS += -w -s -buildid=
-LDFLAGS += -X "github.com/xjasonlyu/tun2socks/constant.Version=$(BUILD_VERSION)"
-LDFLAGS += -X "github.com/xjasonlyu/tun2socks/constant.GitCommit=$(BUILD_COMMIT)"
+LDFLAGS += -X "$(MODULE)/constant.Version=$(BUILD_VERSION)"
+LDFLAGS += -X "$(MODULE)/constant.GitCommit=$(BUILD_COMMIT)"
 
 GO_BUILD = GO111MODULE=$(GO111MODULE) CGO_ENABLED=$(CGO_ENABLED) \
 	go build $(BUILD_FLAGS) -ldflags '$(LDFLAGS)' -tags '$(BUILD_TAGS)' -trimpath
@@ -24,52 +25,45 @@ PLATFORM_LIST = \
 	linux-arm64 \
 	openbsd-amd64 \
 	openbsd-arm64 \
-
-WINDOWS_ARCH_LIST = \
 	windows-amd64 \
 
 all: linux-amd64 darwin-amd64 windows-amd64
 
 tun2socks:
-	$(GO_BUILD) -o $(OUTPUT)/$(BINARY)
+	$(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)
 
 darwin-amd64:
-	GOARCH=amd64 GOOS=darwin $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@
+	GOARCH=amd64 GOOS=darwin $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@
 
 freebsd-amd64:
-	GOARCH=amd64 GOOS=freebsd $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@
+	GOARCH=amd64 GOOS=freebsd $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@
 
 freebsd-arm64:
-	GOARCH=arm64 GOOS=freebsd $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@
+	GOARCH=arm64 GOOS=freebsd $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@
 
 linux-amd64:
-	GOARCH=amd64 GOOS=linux $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@
+	GOARCH=amd64 GOOS=linux $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@
 
 linux-arm64:
-	GOARCH=arm64 GOOS=linux $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@
+	GOARCH=arm64 GOOS=linux $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@
 
 openbsd-amd64:
-	GOARCH=amd64 GOOS=openbsd $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@
+	GOARCH=amd64 GOOS=openbsd $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@
 
 openbsd-arm64:
-	GOARCH=arm64 GOOS=openbsd $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@
+	GOARCH=arm64 GOOS=openbsd $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@
 
 windows-amd64:
-	GOARCH=amd64 GOOS=windows $(GO_BUILD) -o $(OUTPUT)/$(BINARY)-$@.exe
-
-gz_releases=$(addsuffix .gz, $(PLATFORM_LIST))
-zip_releases=$(addsuffix .zip, $(WINDOWS_ARCH_LIST))
+	GOARCH=amd64 GOOS=windows $(GO_BUILD) -o $(BUILD_DIR)/$(BINARY)-$@.exe
 
-$(gz_releases): %.gz : %
-	chmod +x $(OUTPUT)/$(BINARY)-$(basename $@)
-	gzip -f -S .gz $(OUTPUT)/$(BINARY)-$(basename $@)
+zip_releases := $(addsuffix .zip, $(PLATFORM_LIST))
 
-$(zip_releases): %.zip : %
-	zip -m -j $(OUTPUT)/$(BINARY)-$(basename $@).zip $(OUTPUT)/$(BINARY)-$(basename $@).exe
+$(zip_releases): %.zip: %
+	@zip -m -j $(BUILD_DIR)/$(BINARY)-$(basename $@).zip $(BUILD_DIR)/$(BINARY)-$(basename $@)*
 
-all-arch: $(PLATFORM_LIST) $(WINDOWS_ARCH_LIST)
+all-arch: $(PLATFORM_LIST)
 
-releases: $(gz_releases) $(zip_releases)
+releases: $(zip_releases)
 
 clean:
-	rm $(OUTPUT)/*
+	rm -rf $(BUILD_DIR)