backup_rails.gemspec in backup_rails-0.0.1 vs backup_rails.gemspec in backup_rails-0.0.2

@@ -14,11 +14,11 @@
   gem.name          = "backup_rails"
   gem.require_paths = ["lib"]
   gem.version       = BackupRails::VERSION
 
   # For backup
-  gem.add_dependency 'backup', '~> 3.0.24'
-  gem.add_dependency 'net-ssh', '~> 2.3.0'
-  gem.add_dependency 'net-sftp', '~> 2.0.5'
-  gem.add_dependency 'mail', '~> 2.4.0'
+  gem.add_dependency 'backup', '>= 3.0.24'
+  gem.add_dependency 'net-ssh'
+  gem.add_dependency 'net-sftp'
+  gem.add_dependency 'mail'
   gem.add_dependency 'whenever' # For cronjob config, see config/schedule.rb
 end