diff --git a/.gitignore b/.gitignore
index 85f31dcf..fd5db3b6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,7 @@ fuzz/corpus/
 
 # Temporary artifacts generated by code
 kafka-yang-consumer-cache/
+
+# trybuild-generated compiler output (regenerated via TRYBUILD=overwrite,
+# not committed since messages vary across rustc versions)
+**/tests/trybuild/*.stderr