diff --git a/.gitignore b/.gitignore
index a18fba3780..35402a22f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@ railties/test/initializer/root/log
 railties/doc
 railties/guides/output
 railties/tmp
+.rvmrc