diff --git a/.gitignore b/.gitignore
index 5298013fdc..53a2169c67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -90,3 +90,6 @@ packages/protocol/src/generated/validation/*.aot.ts
 packages/desktop/.cache/
 packages/desktop/src-tauri/resources/managed-runtime/
 app.json
+
+# Heap snapshots dumped by --heapsnapshot-near-heap-limit; keep them for debugging.
+*.heapsnapshot