Fix pipeline.

yxd-hde · yxd-hde · commit 41dce071f32e · 2019-11-15T19:23:43.000+09:00
diff --git a/wercker.yml b/wercker.yml
@@ -60,7 +60,7 @@ build-py3:
           python setup.py test
 
 deploy:
-  pypi:
+  box: python:3.7-slim
   steps:
     - script:
         name: deploy to pypi
