diff --git a/.circleci/config.yml b/.circleci/config.yml
index ea7c329..867bf88 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ jobs:
     docker:
       # specify the version you desire here
       # use `-browsers` prefix for selenium tests, e.g. `3.6.1-browsers`
-      - image: circleci/python:2.7
+      - image: circleci/python:3.7.2
       
     working_directory: ~/repo
 
@@ -25,10 +25,11 @@ jobs:
       - run:
           name: install dependencies
           command: |
-            sudo pip install virtualenv
+            sudo pip3 install virtualenv
             virtualenv .
             source bin/activate
-            pip install -r dev_requirements.txt
+            pip3 install -r dev_requirements.txt
+            python3 setup.py install
 
       - save_cache:
           paths:
@@ -39,7 +40,10 @@ jobs:
           name: run tests
           command: |
             . bin/activate
-            py.test tests
+            py.test tests --junitxml=test-reports/junit.xml
+
+      - store_test_results:
+          path: test-reports
 
       - store_artifacts:
           path: test-reports
diff --git a/.gitignore b/.gitignore
index fb9467c..d82f6b3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,5 @@ dist/
 .idea
 .pytest_cache/
 pip-selfcheck.json
+.eggs
+test-reports/
diff --git a/Dockerfile b/Dockerfile
index 83f407d..e77426d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,14 +1,17 @@
-FROM python:2.7-alpine
+FROM python:3.7.2-alpine
 MAINTAINER Mitsuo Takaki <mitsuotakaki@gmail.com>
 
 WORKDIR /usr/src/app
 
-COPY requirements.txt /usr/src/app/
-RUN pip install --no-cache-dir -r requirements.txt
+RUN python3.7 -m pip install --upgrade pip
+COPY requirements.txt ./
+RUN pip3 install --no-cache-dir -r requirements.txt
 
-COPY cachet_url_monitor/* /usr/src/app/cachet_url_monitor/
+COPY cachet_url_monitor/*.py /usr/src/app/cachet_url_monitor/
+COPY setup.py /usr/src/app/
+RUN python3.7 setup.py install
 
 COPY config.yml /usr/src/app/config/
 VOLUME /usr/src/app/config/
 
-CMD ["python", "cachet_url_monitor/scheduler.py", "config/config.yml"]
+CMD ["python3.7", "./cachet_url_monitor/scheduler.py", "config/config.yml"]
diff --git a/README.md b/README.md
index 39e674d..5235ecf 100644
--- a/README.md
+++ b/README.md
@@ -83,16 +83,9 @@ $ python cachet_url_monitor/scheduler.py config.yml
 
 ## Docker
 
-You can run the agent in docker, so you won't need to worry about installing python, virtualenv, or any other dependency into your OS. The `Dockerfile` and `docker-compose.yml` files are already checked in and it's ready to be used.
+You can run the agent in docker, so you won't need to worry about installing python, virtualenv, or any other dependency into your OS. The `Dockerfile` is already checked in and it's ready to be used.
 
-To start the agent in a container using docker compose:
-
-```
-$ docker-compose build
-$ docker-compose up
-```
-
-Or pulling directly from [dockerhub](https://hub.docker.com/r/mtakaki/cachet-url-monitor/). You will need to create your own custom `config.yml` file and run (it will pull latest):
+You have two choices, checking this repo out and building the docker image or it can be pulled directly from [dockerhub](https://hub.docker.com/r/mtakaki/cachet-url-monitor/). You will need to create your own custom `config.yml` file and run (it will pull latest):
 
 ```
 $ docker pull mtakaki/cachet-url-monitor
diff --git a/cachet_url_monitor/configuration.py b/cachet_url_monitor/configuration.py
index efa991b..94730a5 100644
--- a/cachet_url_monitor/configuration.py
+++ b/cachet_url_monitor/configuration.py
@@ -10,8 +10,8 @@ import requests
 from yaml import dump
 from yaml import load
 
-import latency_unit
-import status as st
+import cachet_url_monitor.latency_unit as latency_unit
+import cachet_url_monitor.status as st
 
 # This is the mandatory fields that must be in the configuration file in this
 # same exact structure.
@@ -80,7 +80,7 @@ class Configuration(object):
     def __init__(self, config_file):
         self.logger = logging.getLogger('cachet_url_monitor.configuration.Configuration')
         self.config_file = config_file
-        self.data = load(file(self.config_file, 'r'))
+        self.data = load(open(self.config_file, 'r'))
         self.current_fails = 0
         self.trigger_update = True
 
@@ -146,7 +146,7 @@ class Configuration(object):
         ConfigurationValidationError is raised. Otherwise nothing will happen.
         """
         configuration_errors = []
-        for key, sub_entries in configuration_mandatory_fields.iteritems():
+        for key, sub_entries in configuration_mandatory_fields.items():
             if key not in self.data:
                 configuration_errors.append(key)
 
diff --git a/cachet_url_monitor/scheduler.py b/cachet_url_monitor/scheduler.py
index 02af7b6..8b672e6 100644
--- a/cachet_url_monitor/scheduler.py
+++ b/cachet_url_monitor/scheduler.py
@@ -5,7 +5,7 @@ import time
 
 import schedule
 
-from configuration import Configuration
+from cachet_url_monitor.configuration import Configuration
 
 
 class Agent(object):
@@ -84,7 +84,7 @@ if __name__ == "__main__":
         handler.addFilter(logging.Filter('cachet_url_monitor'))
 
     if len(sys.argv) <= 1:
-        logging.fatal('Missing configuration file argument')
+        logging.getLogger('cachet_url_monitor.scheduler').fatal('Missing configuration file argument')
         sys.exit(1)
 
     scheduler = Scheduler(sys.argv[1])
diff --git a/dev_requirements.txt b/dev_requirements.txt
index cbe1a52..69db5f2 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -1,9 +1,9 @@
-PyYAML==3.12
+PyYAML==4.2b1
 codacy-coverage==1.2.18
 ipython==4.2.0
 mock==2.0.0
 pudb==2016.1
 pytest==3.4.2
 pytest-cov==2.5.1
-requests==2.18.4
+requests==2.21.0
 schedule==0.5.0
diff --git a/setup.cfg b/setup.cfg
index b88034e..67f710d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,9 @@
 [metadata]
 description-file = README.md
+
+[aliases]
+test=pytest
+
+[tool:pytest]
+addopts = --verbose
+python_files = tests/*.py
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 2b66aba..a564090 100644
--- a/setup.py
+++ b/setup.py
@@ -1,8 +1,9 @@
 #!/usr/bin/env python
-from distutils.core import setup
+#from distutils.core import setup
+from setuptools import setup
 
 setup(name='cachet-url-monitor',
-      version='0.4',
+      version='1.4',
       description='Cachet URL monitor plugin',
       author='Mitsuo Takaki',
       author_email='mitsuotakaki@gmail.com',
@@ -13,5 +14,7 @@ setup(name='cachet-url-monitor',
           'requests',
           'yaml',
           'schedule',
-          ]
-     )
+      ],
+      setup_requires=["pytest-runner"],
+      tests_require=["pytest"]
+      )
diff --git a/tests/__init__.py b/tests/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/tests/test_configuration.py b/tests/test_configuration.py
index d65b84d..012aa12 100644
--- a/tests/test_configuration.py
+++ b/tests/test_configuration.py
@@ -10,10 +10,11 @@ import cachet_url_monitor.status
 sys.modules['requests'] = mock.Mock()
 sys.modules['logging'] = mock.Mock()
 from cachet_url_monitor.configuration import Configuration
-from test.test_support import EnvironmentVarGuard
+import os
 
 
 class ConfigurationTest(unittest.TestCase):
+    @mock.patch.dict(os.environ, {'CACHET_TOKEN': 'token2'})
     def setUp(self):
         def getLogger(name):
             self.mock_logger = mock.Mock()
@@ -30,9 +31,6 @@ class ConfigurationTest(unittest.TestCase):
 
         sys.modules['requests'].get = get
 
-        self.env = EnvironmentVarGuard()
-        self.env.set('CACHET_TOKEN', 'token2')
-
         self.configuration = Configuration('config.yml')
         sys.modules['requests'].Timeout = Timeout
         sys.modules['requests'].ConnectionError = ConnectionError