diff --git a/.gitignore b/.gitignore
index d10f769..4e2f427 100644
--- a/.gitignore
+++ b/.gitignore
@@ -205,6 +205,7 @@
 /lib/dart/**/pubspec.lock
 /lib/delphi/test/skip/*.request
 /lib/delphi/test/skip/*.response
+/lib/delphi/test/serializer/*.dat
 /lib/delphi/**/*.identcache
 /lib/delphi/**/*.local
 /lib/delphi/**/*.dcu