diff --git a/pyproject.toml b/pyproject.toml
index 543818d..bf08e5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -71,4 +71,5 @@ src_paths = ["mev_inspect", "tests"]
 skip_glob = ["*/setup.py"]
 filter_files = true
 known_first_party = "mev_inspect"
+known_third_party = "alembic"
 py_version=39