diff --git a/libraries/botbuilder-dialogs/.gitignore b/libraries/botbuilder-dialogs/.gitignore
index d5feef8e26..388c2997fd 100644
--- a/libraries/botbuilder-dialogs/.gitignore
+++ b/libraries/botbuilder-dialogs/.gitignore
@@ -2,4 +2,5 @@
 /**/.vscode
 /**/lib/*
 coverage
-.nyc_output
\ No newline at end of file
+.nyc_output
+**/vendors/**
\ No newline at end of file