diff --git a/.circleci/config.yml b/.circleci/config.yml
index 233a0f7a7..260041a2a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -41,6 +41,11 @@ jobs:
                 --data build_parameters[BASE_TAG]=$BASE_TAG \
                 --data revision=$CIRCLE_SHA1 \
                 https://circleci.com/api/v1.1/project/github/$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME/tree/$CIRCLE_BRANCH
+      - run: mkdir -p build/coverage
+      - persist_to_workspace:
+          root: build
+          paths:
+            - coverage
   test:
     working_directory: ~/code
     docker:
@@ -62,6 +67,8 @@ jobs:
           POSTGRES_PASSWORD: postgres
     parallelism: 6
     steps:
+      - attach_workspace:
+          at: build/coverage
       - checkout
       - restore_cache:
           key: source-{{ .Branch }}--{{ checksum "Pipfile.lock" }}-{{ checksum ".circleci/config.yml" }}
diff --git a/tox.ini b/tox.ini
index 2e6d66663..2b191db35 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,7 @@ addopts =
         --echo-env=CIRCLECI
         --echo-env=PIPENV_VERBOSITY
         --capture=no
+        --cov-append
         --cov-report=html
         --cov-config=tests/.coveragerc
         --cov=etools_datamart
@@ -57,6 +58,7 @@ commands =
     isort src/ tests/ --check-only
     pipenv run pytest --create-db \
             -q \
+            --cov-append \
             --cov-report=term \
             --cov-config=tests/.coveragerc \
             --cov=etools_datamart \