diff --git a/.gitignore b/.gitignore
index 38e9ca975f..d160912b06 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 core
 vgcore.*
+perf.data
+perf.data.old
 .waf*
 tags
 .lock-wscript
@@ -42,4 +44,4 @@ ipch/
 email.md
 deps/v8-*
 ./node_modules
-.svn/
\ No newline at end of file
+.svn/