diff --git a/Gemfile b/Gemfile
index 01f37617..8c01e33a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ end
 
 group(:development) do
   gem('debug', '~> 1.9.0', require: false)
-  gem('rbs', '~> 3.3.2', require: false)
+  gem('rbs', '~> 3.4.0', require: false)
   gem('steep', '~> 1.6.0', require: false)
   gem('benchmark-ips', '~> 2.13.0', require: false)
   gem('stackprof')