Rakefile in appsignal-0.11.4 vs Rakefile in appsignal-0.11.5

@@ -6,9 +6,10 @@
   rails-3.1
   rails-3.2
   rails-4.0
   rails-4.1
   rails-4.2
+  sequel
   sinatra
 )
 
 RUBY_VERSIONS = %w(
   1.9.3-p429