diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4169c3c..6782e7c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,6 +4,7 @@ black
 pytest-codecov
 coverage
 flake8
+furo
 isort
 nbstripout
 pre-commit