diff --git a/pyproject.toml b/pyproject.toml
index 99ce63da..3dac0c9d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -84,6 +84,7 @@
   disallow_untyped_decorators = true
 
   extra_checks = true  # was: strict_equality, strict_concatenate = true
+
   no_implicit_optional = true
   # no_implicit_reexport = true