rails_61.gemfile in instana-1.216.0

- old
+ new

@@ -9,9 +9,10 @@
 gem "webmock"
 gem "puma"
 gem "rack-test"
 gem "simplecov", "~> 0.21.2"
 gem "mail", ">= 2.8.1"
+gem "mutex_m" # mutex_m is not part of the default gems since Ruby 3.4.0
 gem "rails", ">= 6.1", "< 7.0"
 gem "mysql2", "0.5.5"
 gem "pg"
 gem "sqlite3", "~> 1.4"
 