diff --git a/pyproject.toml b/pyproject.toml
index 4cd7a3b42..d09b7dd29 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -178,6 +178,7 @@ module = [
   "plinth.tests.config_local",
   "pytest_splinter.*",
   "ruamel.*",
+  "segno.*",
   "selenium.*",
   "splinter.*",
   "stronghold.*",