diff --git a/sage_validation/settings.py b/sage_validation/settings.py
index 22cb5ec0d6bf5bac363077addfae76f5309a09f8..23ffe66181ad8aa96207ee63fae11c750f28b6a3 100644
--- a/sage_validation/settings.py
+++ b/sage_validation/settings.py
@@ -37,7 +37,7 @@ INSTALLED_APPS = [
 LOCAL_APPS = [
     "sage_validation.file_validator",
 ]
-THIRD_PARTY_APPS = []
+THIRD_PARTY_APPS: list[str] = []
 
 INSTALLED_APPS += THIRD_PARTY_APPS + LOCAL_APPS