diff --git a/.circleci/config.yml b/.circleci/config.yml
index bac420d9..db5b6d64 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -14,7 +14,7 @@ jobs:
     # https://circleci.com/docs/2.0/circleci-images/
     machine:
       python:
-        version: 2.7.14
+        version: 3.6.10
     steps:
     # Machine Setup
     #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each
@@ -58,7 +58,7 @@ jobs:
     # Test
     #   This would typically be a build job when using workflows, possibly combined with build
     # This is based on your 1.0 configuration file or project settings
-    - run: python ./setup.py develop && make check-2.7
+    - run: python ./setup.py develop && make check-3.6
     - run: cd ./test/stdlib && bash ./runtests.sh 'test_[p-z]*.py'
     # Teardown
     #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each