diff --git a/pyproject.toml b/pyproject.toml
index 070f867..56d59eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,6 +44,7 @@ dependencies = [
     "findmfpy",
     "kdepy>=1.1.8",
     "perlin-noise==1.13",
+    "frictionless",
     # TODO demote to optional again later, but necessary for pycharm right now
     "bfabric @ git+https://github.com/fgcz/bfabricPy.git@main",
     "app_runner @ git+https://github.com/fgcz/bfabricPy.git@main#egg=app_runner&subdirectory=app_runner",