diff --git a/rubyai.gemspec b/rubyai.gemspec
index 08b985c..0522076 100644
--- a/rubyai.gemspec
+++ b/rubyai.gemspec
@@ -1,7 +1,7 @@
 Gem::Specification.new do |s|
   s.name        = "rubyai"
   s.version     = "0.1.0"
-  s.summary     = "A Ruby gem for the OpenAI GPT-3 API"
+  s.summary     = "A Ruby gem for the OpenAI (GPT-3 and GPT-4) API"
   s.homepage    = "https://github.com/alexshapalov/rubyai"
   s.authors     = ["Alex Shapalov"]
   s.files       = ["lib/rubyai.rb"]