diff --git a/.gitignore b/.gitignore
index 7857a4e8..e62d213c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -71,3 +71,6 @@ hermes-agent-main/
 skills/*
 
 offline-backend-20260512/backend/.deer-flow/*
+
+# Per-user skill_evolution overrides — runtime data written by the API
+offline-backend-20260512/backend/skill_evolution.json