diff --git a/.gitignore b/.gitignore
index 7770c64a3..cfdc18e63 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,7 @@ nuget.exe
 changelog.html
 obj/
 build/
+!extras/build
 build-local/
 build-global/
 install/