diff --git a/xwords4/relay/.gitignore b/xwords4/relay/.gitignore
index 67cc22994..ebecf647e 100644
--- a/xwords4/relay/.gitignore
+++ b/xwords4/relay/.gitignore
@@ -6,3 +6,4 @@ xwrelay.log*
 xwrelay.pid
 xwrelay
 xwrelay.conf
+vgcore.*