diff --git a/.circleci/config.yml b/.circleci/config.yml
index 2491b968ed7e539829598bb55429e3628e1908cf..e8a758fcae9b7810c58473e050970a071fc05066 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ jobs:
     docker:
       # specify the version you desire here
       # use `-browsers` prefix for selenium tests, e.g. `3.6.1-browsers`
-      - image: circleci/python:3.6.6
+      - image: circleci/python:3.6.4
       
       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images