diff --git a/conf/topdir/pyproject.toml b/conf/topdir/pyproject.toml
index 26bf3581..cea8145c 100644
--- a/conf/topdir/pyproject.toml
+++ b/conf/topdir/pyproject.toml
@@ -30,6 +30,7 @@
 
 [tool.ruff]
   line-length = 88
+  output-format = "concise"
 
 [tool.ruff.format]