diff --git a/pyproject.toml b/pyproject.toml
index b708cf4d..cbce9144 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ google-oauth2-tool = "^0.0.3"
 google-api-python-client = "^2.114.0"
 pandas = "^2.2.0"
 pre-commit = "^3.6.0"
+granian = "^1.0.1"
 
 [tool.poetry.group.dev.dependencies]
 setuptools = "^69.0.2"