diff --git a/mypy.ini b/mypy.ini
index 2bac9249f..01c1f7af6 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -4,3 +4,6 @@ ignore_missing_imports = True
 
 [mypy-acme.*]
 check_untyped_defs = True
+
+[mypy-certbot_dns_rfc2136.*]
+check_untyped_defs = True