retry-after is a single value header.

Author: ioquatix

async-rest.gemspec

@@ -25,5 +25,5 @@ Gem::Specification.new do |spec|
 	spec.required_ruby_version = ">= 3.1"
 
 	spec.add_dependency "async-http", "~> 0.42"
-	spec.add_dependency "protocol-http", "~> 0.7"
+	spec.add_dependency "protocol-http", "~> 0.45"
 end