diff --git a/.circleci/config.yml b/.circleci/config.yml
index 6554e1f..2cb8a33 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,26 +1,20 @@
-# Use the latest 2.1 version of CircleCI pipeline process engine.
-# See: https://circleci.com/docs/2.0/configuration-reference
 version: 2.1
 
-# Define a job to be invoked later in a workflow.
-# See: https://circleci.com/docs/2.0/configuration-reference/#jobs
 jobs:
-  say-hello:
-    # Specify the execution environment. You can specify an image from Dockerhub or use one of our Convenience Images from CircleCI's Developer Hub.
-    # See: https://circleci.com/docs/2.0/configuration-reference/#docker-machine-macos-windows-executor
+  build_test:
     docker:
-      - image: cimg/base:stable
-    # Add steps to the job
-    # See: https://circleci.com/docs/2.0/configuration-reference/#steps
+      - image: circleci/python:3.6.4
     steps:
-      - checkout
+      - checkout  # checkout source code to working directory
       - run:
-          name: "Say hello"
-          command: "echo Hello, World!"
-
-# Invoke jobs via workflows
-# See: https://circleci.com/docs/2.0/configuration-reference/#workflows
+          command: |  # Install package
+            sudo pip install -U pipenv
+            pipenv install .
+      - run:
+          command: |  # Run tests
+            pipenv install pytest
+            pipenv run pytest python/fastgrouper/test/ -s -vv
 workflows:
-  say-hello-workflow:
+  build_test:
     jobs:
-      - say-hello
+      - build_test
diff --git a/.gitignore b/.gitignore
index e01530a..d3d877c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,7 @@
 .cache
 grouper.egg-info
 dist
-fastgrouper.egg-info
\ No newline at end of file
+fastgrouper.egg-info
+build
+Pipfile
+Pipfile.lock
\ No newline at end of file
diff --git a/python/fastgrouper/test/__init__.py b/python/fastgrouper/test/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/setup.py b/setup.py
index 75b13c2..62b316d 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
 
 setuptools.setup(
     name="fastgrouper",
-    version="0.1.0",
+    version="0.1.1",
     author="Shreyas Joshi",
     author_email="sjoshistrats@gmail.com",
     description="A package for applying efficient groupby operations.",