diff --git a/pyproject.toml b/pyproject.toml
index fa3f88116..47e298761 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -172,6 +172,7 @@ python_version = "3.11"
 exclude = [
   "/tests",
 ]
+strict = true
 warn_unreachable = true
 enable_error_code = ["ignore-without-code", "redundant-expr", "truthy-bool"]