diff --git a/.circleci/config.yml b/.circleci/config.yml
index bf7cea54..153fc654 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -50,6 +50,8 @@ jobs:
               - .coverage.<< parameters.python_version >>
 
   merge_coverage:
+    docker:
+        - image: continuumio/miniconda3
     steps:
       - checkout
       - attach_workspace: