diff --git a/.gitignore b/.gitignore
index 9c690b1a..663c6503 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,5 +41,8 @@ testem.log
 .DS_Store
 Thumbs.db
 
+# NPM package lock file
+/package-lock.json
+
 # project configuration environment file
 src/environments/environment.prod.ts