diff --git a/.gitignore b/.gitignore
index 08ee74195..66a5276fe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,6 +52,8 @@ Obj
 *.mdb.meta
 ProjectSettings/Packages/com.unity.testtools.codecoverage/Settings.json
 UserSettings/
+# Packages/manifest.json is enough. lock is auto generated from it.
+Packages/packages-lock.json
 
 # generated by jekyll for documentation
 docs/_site