diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index eb86ba9..1698507 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -77,7 +77,7 @@ Here's how to set up ``snappass`` for local development.
     $ mkvirtualenv snappass
     $ cd snappass/
     $ python setup.py develop
-    $ pip install -r dev-requirements.txt
+    $ make dev
 
 4. Create a branch for local development::
 
@@ -85,35 +85,36 @@ Here's how to set up ``snappass`` for local development.
 
    Now you can make your changes locally.
 
-5. You can test your changes in a development server with debug and autoreload::
+5. You run a development server with debug and autoreload to manually verify::
 
     $ docker run -d --name redis-server -p 6379:6379 redis
-    $ export FLASK_DEBUG=1 && \
-      export FLASK_APP=snappass.main && \
-      export NO_SSL=True
-    $ flask run
+    $ make run
 
   You now have a running instance on localhost:5000/
 
-6. When you're done making changes, check that your changes pass the tests and
+6. Please add some tests to tests.py and run tests::
+
+    $ make test
+
+7. When you're done making changes, check that your changes pass the tests and
    flake8::
 
     $ flake8 snappass tests.py setup.py
     $ tox
 
-7. Commit your changes and push your branch to GitHub::
-
-    $ git add .
-    $ git commit -m "Your detailed description of your changes."
-    $ git push origin name-of-your-bugfix-or-feature
-
 8. Check that the test coverage hasn't dropped::
 
     $ coverage run --source snappass tests.py
     $ coverage report -m
     $ coverage html
 
-9. Submit a pull request through the GitHub website.
+9. Commit your changes and push your branch to GitHub::
+
+    $ git add .
+    $ git commit -m "Your detailed description of your changes."
+    $ git push origin name-of-your-bugfix-or-feature
+
+10. Submit a pull request through the GitHub website.
 
 Pull Request Guidelines
 -----------------------
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..aa0c805
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,13 @@
+.PHONY: dev prod run test
+
+dev: dev-requirements.txt
+	pip install -r dev-requirements.txt
+
+prod: requirements.txt
+	pip install -r requirements.txt
+
+run: prod
+	FLASK_DEBUG=1 FLASK_APP=snappass.main NO_SSL=True venv/bin/flask run
+
+test:
+	PYTHONPATH=snappass venv/bin/nosetests -s tests
diff --git a/dev-requirements.txt b/dev-requirements.txt
index e3f9eb1..99d441b 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,6 +1,9 @@
-pytest==3.6.3
-pytest-cov==2.5.1
-fakeredis==0.7.0
 coverage==4.5.1
+fakeredis==0.7.0
 flake8==3.5.0
+freezegun==0.3.15
+mock==2.0.0
+nose==1.3.7
+pytest-cov==2.5.1
+pytest==3.6.3
 tox==3.1.2
diff --git a/requirements.txt b/requirements.txt
index e8345c2..2d820b1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,13 @@
-Flask==1.0.2
-Jinja2==2.10.1
-MarkupSafe==1.0
-Werkzeug==0.15.6
-itsdangerous==0.24
-redis==2.10.6
+asn1crypto==1.3.0
+cffi==1.14.0
+click==7.1.2
 cryptography==2.3.1
-mock==2.0.0
+Flask==1.0.2
+idna==2.9
+itsdangerous==0.24
+Jinja2==2.10.1
+MarkupSafe==1.1.1
+pycparser==2.20
+redis==2.10.6
+six==1.14.0
+Werkzeug==0.15.6
diff --git a/snappass/main.py b/snappass/main.py
index 17f72e5..7339333 100644
--- a/snappass/main.py
+++ b/snappass/main.py
@@ -1,5 +1,4 @@
 import os
-import re
 import sys
 import uuid
 
@@ -38,7 +37,7 @@ else:
         host=redis_host, port=redis_port, db=redis_db)
 REDIS_PREFIX = os.environ.get('REDIS_PREFIX', 'snappass')
 
-TIME_CONVERSION = {'week': 604800, 'day': 86400, 'hour': 3600}
+TIME_CONVERSION = {'two weeks': 1209600, 'week': 604800, 'day': 86400, 'hour': 3600}
 
 
 def check_redis_alive(fn):
@@ -129,6 +128,7 @@ def password_exists(token):
     storage_key, decryption_key = parse_token(token)
     return redis_client.exists(storage_key)
 
+
 def empty(value):
     if not value:
         return True
diff --git a/snappass/templates/set_password.html b/snappass/templates/set_password.html
index 0282c51..d332ace 100644
--- a/snappass/templates/set_password.html
+++ b/snappass/templates/set_password.html
@@ -15,7 +15,8 @@
 
         <div class="col-sm-2 margin-bottom-10">
           <select class="form-control" name="ttl">
-            <option value="Week">Week</option>
+            <option value="Two Weeks">Two Weeks</option>
+            <option value="Week" selected="selected">Week</option>
             <option value="Day">Day</option>
             <option value="Hour">Hour</option>
           </select>
diff --git a/tests.py b/tests.py
index b8e147d..759cea9 100644
--- a/tests.py
+++ b/tests.py
@@ -1,10 +1,13 @@
 from mock import patch
+import re
 import time
 import unittest
 import uuid
 from unittest import TestCase
+from urllib.parse import unquote
 
 from cryptography.fernet import Fernet
+from freezegun import freeze_time
 from werkzeug.exceptions import BadRequest
 from fakeredis import FakeStrictRedis
 
@@ -117,9 +120,25 @@ class SnapPassRoutesTestCase(TestCase):
 
     def test_url_prefix(self):
         password = "I like novelty kitten statues!"
-        snappass.URL_PREFIX="/test/prefix"
+        snappass.URL_PREFIX = "/test/prefix"
         rv = self.app.post('/', data={'password': password, 'ttl': 'hour'})
         self.assertIn("localhost/test/prefix/", rv.get_data(as_text=True))
 
+    def test_set_password(self):
+        with freeze_time("2020-05-08 12:00:00") as frozen_time:
+            password = 'my name is my passport. verify me.'
+            rv = self.app.post('/', data={'password': password, 'ttl': 'two weeks'})
+
+            html_content = rv.data.decode("ascii")
+            key = re.search(r'id="password-link" value="https://localhost/([^"]+)', html_content).group(1)
+            key = unquote(key)
+
+            frozen_time.move_to("2020-05-22 11:59:59")
+            self.assertEqual(snappass.get_password(key), password)
+
+            frozen_time.move_to("2020-05-22 12:00:00")
+            self.assertIsNone(snappass.get_password(key))
+
+
 if __name__ == '__main__':
     unittest.main()