.gitignore in postman_mta-0.2.7 vs .gitignore in postman_mta-0.2.8

@@ -1,7 +1,6 @@
 /.bundle/
 /.yardoc
-/Gemfile.lock
 /_yardoc/
 /coverage/
 /doc/
 /pkg/
 /spec/reports/