diff --git a/.circleci/config.yml b/.circleci/config.yml
index 40bb593..74b506a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -18,6 +18,7 @@ version: 2
 jobs:
   build:
     docker:
+      - image: circleci/python:3.7.4
    
     working_directory: ~/repo