diff --git a/.gitignore b/.gitignore
index a0fcaba84..a48353f7b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,5 @@ spec/reports
 doc/*.html
 .rspec
 /Gemfile.local
+bower_components
+node_modules
diff --git a/bower.json b/bower.json
new file mode 100644
index 000000000..4ce046a3f
--- /dev/null
+++ b/bower.json
@@ -0,0 +1,21 @@
+{
+  "name": "tdiary-core",
+  "version": "4.0.3",
+  "homepage": "https://github.com/tdiary/tdiary-core",
+  "authors": [
+    "SHIBATA Hiroshi <hsbt@ruby-lang.org>"
+  ],
+  "license": "GPL",
+  "ignore": [
+    "**/.*",
+    "node_modules",
+    "bower_components",
+    "spec/javascripts",
+    "test",
+    "tests"
+  ],
+  "devDependencies": {
+    "jquery": "~2.1.0",
+    "jasmine-jquery": "~2.0.3"
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 000000000..1cc202139
--- /dev/null
+++ b/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "tdiary-core",
+  "version": "4.0.3",
+  "description": "",
+  "main": "",
+  "directories": {
+    "doc": "doc",
+    "test": "test"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/tdiary/tdiary-core.git"
+  },
+  "author": "",
+  "license": "GPL",
+  "bugs": {
+    "url": "https://github.com/tdiary/tdiary-core/issues"
+  },
+  "homepage": "https://github.com/tdiary/tdiary-core",
+  "devDependencies": {
+    "bower": "~1.2.8",
+    "grunt": "~0.4.4",
+    "grunt-bower-task": "~0.3.4"
+  }
+}