diff --git a/.gitignore b/.gitignore
index 19efca2..8faf9ca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,4 @@ test
 # Build result
 *.zip
 *.xz
+*.gz
diff --git a/Makefile b/Makefile
index 332b8c5..e98f875 100644
--- a/Makefile
+++ b/Makefile
@@ -18,13 +18,14 @@ CC := $(NDK_TOOLCHAIN)/bin/$(TARGET_ARCH)-linux-$(TARGET_SDK)-clang
 TEST_OUTPUT = '$(shell cd $(BUILD_PATH) && ./test | head -c 12)'
 TEST_EXPECTED = '{"code":200,'
 
-all:
+all: clean
 	@BUILD_PATH=$(BUILD_PATH)/aarch64 TARGET_ARCH=aarch64 GOARCH=arm64 $(MAKE) -e shared
 	@BUILD_PATH=$(BUILD_PATH)/armv7a TARGET_ARCH=armv7a GOARCH=arm TARGET_SDK=androideabi23 $(MAKE) -e shared
 	@BUILD_PATH=$(BUILD_PATH)/i686 TARGET_ARCH=i686 GOARCH=amd64 $(MAKE) -e shared
 	@BUILD_PATH=$(BUILD_PATH)/x86_64 TARGET_ARCH=x86_64 GOARCH=386 $(MAKE) -e shared
 	rm -rf $(BUILD_PATH)/*/*.h
-	cd $(BUILD_PATH) && xz -z -9 -k aarch64/* armv7a/* i686/* x86_64/*
+	cd $(BUILD_PATH) && gzip -9 -k aarch64/* armv7a/* i686/* x86_64/*
+	find $(BUILD_PATH) -mindepth 1 -maxdepth 1 -type d -exec mv {}/lib$(PROJECT_NAME).so.gz {}_lib$(PROJECT_NAME).so.gz \;; \
 	cd $(BUILD_PATH) && zip -r -9 $(BUILD_PATH).zip aarch64 armv7a i686 x86_64
 shared: $(GO_SRC) dir tidy
 	GOOS=$(GOOS) GOARCH=$(GOARCH) CGO_ENABLED=$(CGO_ENABLED) NDK_TOOLCHAIN=$(NDK_TOOLCHAIN) CC=$(CC) go build -buildmode=c-shared -o $(BUILD_PATH)/lib$(PROJECT_NAME).so $(GO_SRC)
@@ -46,5 +47,6 @@ clean:
 		rm -rf $(BUILD_PATH)/lib$(PROJECT_NAME).*; \
 		rm -rf $(BUILD_PATH)/test; \
 		rm -rf $(BUILD_PATH)/*.zip; \
+		rm -rf $(BUILD_PATH)/*.gz; \
 		find $(BUILD_PATH) -mindepth 1 -maxdepth 1 -type d -exec rm -rf {} \;; \
 	fi