diff --git a/tools/net/ynl/ynltool/.gitignore b/tools/net/ynl/ynltool/.gitignore
index f38848dbb0d3..690d399c921a 100644
--- a/tools/net/ynl/ynltool/.gitignore
+++ b/tools/net/ynl/ynltool/.gitignore
@@ -1 +1,2 @@
 ynltool
+*.d