diff --git a/.gitignore b/.gitignore
index 0528609a..b35b0944 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,6 +37,7 @@ captrace/log/
 tools/loadmconf/loadmconf
 tools/loadpconf/loadpconf
 
+reference
 vendor
 
 # Built Visual Studio Code Extensions