diff --git a/active_model_otp.gemspec b/active_model_otp.gemspec
index 66fc920..6294325 100644
--- a/active_model_otp.gemspec
+++ b/active_model_otp.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
   spec.required_ruby_version = ">= 2.3"
 
   spec.add_dependency "activemodel"
-  spec.add_dependency "rotp", "~> 6.2.0"
+  spec.add_dependency "rotp", "~> 6.3.0"
 
   spec.add_development_dependency "activerecord"
   spec.add_development_dependency "rake"