diff --git a/conf/templates/pyproject.toml b/conf/templates/pyproject.toml
index 2a4386b7..0500ebb4 100644
--- a/conf/templates/pyproject.toml
+++ b/conf/templates/pyproject.toml
@@ -10,6 +10,8 @@
 
   warn_unused_ignores = true
 
+  warn_unreachable = true
+
   enable_error_code = [
     "explicit-override",
     "ignore-without-code",