diff --git a/.gitignore b/.gitignore
index 7d6c7b0e..1c19aa51 100644
--- a/.gitignore
+++ b/.gitignore
@@ -95,3 +95,6 @@ data/.api-key
 data/credentials.json
 data/
 .codex/
+
+# GSD planning docs (local-only)
+.planning/