diff --git a/pyproject.toml b/pyproject.toml
index 467180e..d455944 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,4 +20,5 @@ pylint = "*"
 pytest = "*"
 snapshottest = "*"
 rope = "*"
+toml = "*"
 yapf = "*"