diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 000000000..ddeb8c50b
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,10 @@
+version: 2.1
+jobs:
+  build:
+    docker:
+      - image: circleci/python:3.7.3
+    steps:
+      - checkout
+      - run:
+          name: run tests
+          command: make deps && make test
diff --git a/requirements.txt b/requirements.txt
index 88562b171..4211bccf2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-jsonschema==2.6.0
+jsonschema==3.0.1
diff --git a/requirements_dev.txt b/requirements_dev.txt
index edb3a016a..41f4e881d 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,5 +5,4 @@ coverage==4.5.2
 pytest-asyncio==0.10.0
 pytest-cov==2.6.1
 pytest==4.1.1
-twine==1.12.1
 freezegun==0.3.11
diff --git a/setup.py b/setup.py
index 00a64a8c2..c2b6999fd 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
     ],
     packages=find_packages(),  # Required
     install_requires=[
-        'jsonschema (==2.6.0)',
+        'jsonschema (==3.0.1)',
     ],
     dependency_links=[],  # Optional
     include_package_data=True,