diff --git a/Makefile b/Makefile
index a5328fe7..4cdeeea0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,17 +1,22 @@
-.PHONY: release-build package
+.PHONY: install release-build package
 VERSION = 0.0.0
 PLATFORM = linux
+CERTNAME = ""
 
 ICON = ""
+CERT = ""
 ifeq (${PLATFORM}, darwin)
-	ICON = "--icon=./build/icons/whalebird.icns"
+	ICON = --icon=./build/icons/whalebird.icns
+	CERT = --sign='${CERTNAME}'
 endif
 ifeq (${PLATFORM}, windows)
-	ICON = "--icon=./build/icons/whalebird.ico"
+	ICON = --icon=./build/icons/whalebird.ico
 endif
 
-all: release-build package
+all: install release-build package
+install: package.json
+	npm install
 release-build: package.json
 	npm run pack
 package: release-build
-	electron-packager ./ whalebird --platform=${PLATFORM} --arch=x64 --electron-version=1.8.3  --build-version=${VERSION} --asar --out=packages --ignore="^/src" --ignore="^/test" --ignore="^/.electron-vue" --ignore="^/.envrc" --prune=true ${ICON}
+	electron-packager ./ whalebird --platform=${PLATFORM} --arch=x64 --electron-version=1.8.3  --build-version=${VERSION} --asar --out=packages --ignore="^/src" --ignore="^/test" --ignore="^/.electron-vue" --ignore="^/.envrc" --prune=true $(ICON) $(CERT)
diff --git a/package-lock.json b/package-lock.json
index 71dc963f..1973f949 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "whalebird",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 86e51aec..0e88a7dc 100644
--- a/package.json
+++ b/package.json
@@ -2,8 +2,12 @@
   "name": "whalebird",
   "version": "0.1.0",
   "author": "AkiraFukushima <h3.poteto@gmail.com>",
-  "description": "A mastodon client",
-  "license": null,
+  "description": "A desktop mastodon client",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/h3poteto/whalebird-desktop.git"
+  },
   "main": "./dist/electron/main.js",
   "scripts": {
     "build": "node .electron-vue/build.js && electron-builder",
diff --git a/src/main/index.js b/src/main/index.js
index 01d1d8a0..7643ce59 100644
--- a/src/main/index.js
+++ b/src/main/index.js
@@ -21,8 +21,13 @@ const winURL = process.env.NODE_ENV === 'development'
   ? `http://localhost:9080`
   : `file://${__dirname}/index.html`
 
+// https://github.com/louischatriot/nedb/issues/459
+const userData = app.getPath('userData')
+const databasePath = process.env.NODE_ENV === 'production'
+  ? userData + '/db/whalebird.db'
+  : 'whalebird.db'
 let db = new Datastore({
-  filename: 'whalebird.db',
+  filename: databasePath,
   autoload: true
 })