diff --git a/.gitignore b/.gitignore
index 5d65c5e..ffbfb94 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,8 @@ eggs/
 .eggs/
 lib/
 lib64/
+# Exception: Flutter display app source is in display/lib/ — track it
+!display/lib/
 parts/
 sdist/
 var/