diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9f3d097..7a3531f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -68,7 +68,7 @@ jobs:
     build_docker:
         environment
             IMAGE_NAME:698148/my-awesome-ci-expr
-        docker
+        docker:
             - image:circleci/buildpack-deps:stretch
         steps:
             - checkout