diff --git a/lib/appsignal/cli/install.rb b/lib/appsignal/cli/install.rb
index <HASH>..<HASH> 100644
--- a/lib/appsignal/cli/install.rb
+++ b/lib/appsignal/cli/install.rb
@@ -85,7 +85,7 @@ module Appsignal
           puts 'Installing for Sinatra'
           config[:name] = required_input('  Enter application name: ')
           puts
-          configure(config, ['production', 'staging'], true)
+          configure(config, ['development', 'production', 'staging'], true)
 
           puts "Finish Sinatra configuration"
           puts "  Sinatra requires some manual configuration."
@@ -107,7 +107,7 @@ module Appsignal
           config[:name] = required_input('  Enter application name: ')
           puts
 
-          configure(config, ['production', 'staging'], true)
+          configure(config, ['development', 'production', 'staging'], true)
 
           puts "Finish Padrino installation"
           puts "  Padrino requires some manual configuration."
@@ -127,7 +127,7 @@ module Appsignal
           config[:name] = required_input('  Enter application name: ')
           puts
 
-          configure(config, ['production', 'staging'], true)
+          configure(config, ['development', 'production', 'staging'], true)
 
           puts "Manual Grape configuration needed"
           puts "  See the installation instructions here:"
Add development to environments for yml file

This makes this onboarding easier for people testing their first
requests in development mode. It also follows the Rails defaults.