diff --git a/.gitignore b/.gitignore
index 668d655..dda6f31 100644
--- a/.gitignore
+++ b/.gitignore
@@ -81,6 +81,7 @@ Thumbs.db
 # Agent / Tool files
 .github/instructions/TODO.md
 .github/instructions/DONE.md
+.github/instructions/BACKLOG.md
 # (keep AGENTS.md, MEMORY.md, and other instruction files)
 
 # Temporary architecture artifacts