diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1b8ac9ff0d363c3b43a154413298d9bfc5b35515..37ce8374349ee3997487c738b8ff1b30319ec520 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -49,7 +49,7 @@ jobs:
 
   tests:
     docker:
-      - image: "circleci/python:3.7"
+      - image: "circleci/python:2.7"
 
     environment:
       PIP_SYNC_REQUIREMENTS: "requirements.txt requirements-tests.txt"