diff --git a/mypy.ini b/mypy.ini
index c11386b89a93..4ccea6fa5aad 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -93,6 +93,9 @@ exclude = (?x)
    |tests/utils.py
    )$
 
+[mypy-synapse._scripts.*]
+disallow_untyped_defs = True
+
 [mypy-synapse.api.*]
 disallow_untyped_defs = True