diff --git a/http.gemspec b/http.gemspec
index 8378f659..f914733f 100644
--- a/http.gemspec
+++ b/http.gemspec
@@ -30,7 +30,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency "addressable",    "~> 2.3"
   gem.add_runtime_dependency "http-cookie",    "~> 1.0"
   gem.add_runtime_dependency "http-form_data", "~> 2.2"
-  gem.add_runtime_dependency "llhttp-ffi",     "~> 0.0.1"
+  gem.add_runtime_dependency "llhttp-ffi",     "~> 0.3.0"
 
   gem.add_development_dependency "bundler", "~> 2.0"