diff --git a/.gitignore b/.gitignore
index 8b75efd..0ced602 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,6 @@ firefox/package.json
 build/
 node_modules/
 npm-debug.log
+
+# Virtualenv
+env/
diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..5148b49
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -e
+
+# python
+pyvenv-3.4 env
+env/bin/pip install -r requirements.txt
+
+# npm
+npm install
+npm run build
diff --git a/package.json b/package.json
index 4cfc690..5595af4 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "build-data-files": "python3 firefox/build-package.py && python3 chrome/build-manifest.py",
     "distribute": "rm -rf firefox/data/* chrome/data/* && cp -rf build/* firefox/data/ && cp -rf build/* chrome/data/",
     "build": "npm run create-dirs && npm run build-assets && npm run build-js && npm run distribute && npm run build-data-files",
-    "clean": "rm -rf firefox/data chrome/data node_modules/ build/"
+    "clean": "rm -rf firefox/data chrome/data node_modules/ build/ env/"
   },
   "repository": {
     "type": "git",
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..90136ac
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,5 @@
+coverage==3.7.1
+flake8==2.4.1
+lxml==3.4.4
+pep8==1.5.7
+requests==2.7.0