diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5bcd132..b787123 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,9 +1,14 @@
 # -----------------------------------------------------------------------------
-#   - invoked on push, pull_request, or manual trigger
+#   - invoked on push, pull_request, manual trigger, or schedule
 #   - test under at least 3 versions of python
 # -----------------------------------------------------------------------------
 name: build
-on: [push, pull_request, workflow_dispatch]
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+  schedule: 
+    - cron: "0 8 * * *"
 
 jobs:
   build:
@@ -31,7 +36,11 @@ jobs:
           pip install .[dev]
       - name: Test
         run: |
-          pytest ./tests
+          if github.event_name == 'schedule'; then
+            pytest --runslow ./tests
+          else
+            pytest ./tests
+          fi
       - name: Doc build
         run: |
           make html -C docs/ SPHINXOPTS="-W --keep-going -n"
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 520a2d5..8af4243 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -17,6 +17,10 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install setuptools wheel twine
+      - name: Test
+        run: |
+          pip install .[test]
+          pytest ./tests
       - name: Build and publish
         env:
           TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
diff --git a/README.rst b/README.rst
index 66f73eb..ee7240f 100644
--- a/README.rst
+++ b/README.rst
@@ -4,8 +4,8 @@ Risk Distributions
 .. image:: https://badge.fury.io/py/risk_distributions.svg
     :target: https://badge.fury.io/py/risk-distributions
 
-.. image:: https://travis-ci.org/ihmeuw/risk_distributions.svg?branch=master
-    :target: https://travis-ci.org/ihmeuw/risk_distributions
+.. image:: https://github.com/ihmeuw/risk_distributions/actions/workflows/build.yml/badge.svg?branch=main
+    :target: https://github.com/ihmeuw/risk_distributions
     :alt: Latest Version
 
 .. image:: https://readthedocs.org/projects/risk-distributions/badge/?version=latest
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..3178a8f
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,19 @@
+import pytest
+
+
+def pytest_addoption(parser):
+    parser.addoption("--runslow", action="store_true", default=False, help="run slow tests")
+
+
+def pytest_configure(config):
+    config.addinivalue_line("markers", "slow: mark test as slow to run")
+
+
+def pytest_collection_modifyitems(config, items):
+    if config.getoption("--runslow"):
+        # --runslow given in cli: do not skip slow tests
+        return
+    skip_slow = pytest.mark.skip(reason="need --runslow option to run")
+    for item in items:
+        if "slow" in item.keywords:
+            item.add_marker(skip_slow)