--- a/Gemfile
+++ b/Gemfile
@@ -289,7 +289,6 @@ gem 'batch-loader', '~> 1.2', '>= 1.2.2'
 # Perf bar
 gem 'peek', '~> 1.0', '>= 1.0.1'
 gem 'peek-gc', '~> 0.0.2'
-gem 'peek-mysql2', '~> 1.2', group: :mysq
 gem 'peek-pg', '~> 1.3', group: :postgres
 gem 'peek-rblineprof', '~> 0.2.0'
 gem 'peek-redis', '~> 1.2'