diff --git a/.gitignore b/.gitignore
index ae82a1686..9cd85a451 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,6 +27,7 @@ jspm_packages/
 .npm
 package-lock.json
 tools/webfilesbuilder/package-lock.json
+tools/wsemulator/package-lock.json
 
 # Output of 'npm pack'
 *.tgz