diff --git a/lib/net/net-protocol.gemspec b/lib/net/net-protocol.gemspec
index 41fb894def..767a7d48e2 100644
--- a/lib/net/net-protocol.gemspec
+++ b/lib/net/net-protocol.gemspec
@@ -30,4 +30,7 @@ Gem::Specification.new do |spec|
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
+
+  spec.add_dependency "timeout"
+  spec.add_dependency "io-wait"
 end