diff --git a/.circleci/config.yml b/.circleci/config.yml
index 87e3b2a..5508791 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -4,24 +4,24 @@ orbs:
 
 jobs:
 
-  build-python36:
+  test-python36:
     docker:
-      - image: ubuntu:18.04
+      - image: python:3.6.12
     environment:
+      - LC_ALL=C.UTF-8
       - PYTHONIOENCODING: utf-8
     steps:
-      - run: apt-get update ; apt-get install -y make git curl python3 python3-pip wget imagemagick locales
-      - run: locale-gen "en_US.UTF-8"; update-locale LC_ALL="en_US.UTF-8"
+      - run: apt-get update; apt-get install -y make git curl wget imagemagick
       - checkout
       - run: pip3 install --upgrade pip
       - run: make install deps-test PIP_INSTALL="pip3 install"
-      - run: make coverage LC_ALL=en_US.utf8
+      - run: make coverage
       - codecov/upload
 
 workflows:
   build:
     jobs:
-      - build-python36:
+      - test-python36:
           filters:
             branches:
               ignore: