diff --git a/lib/net/net-pop.gemspec b/lib/net/net-pop.gemspec
index 5bdfdfda32..6d80e334d8 100644
--- a/lib/net/net-pop.gemspec
+++ b/lib/net/net-pop.gemspec
@@ -29,4 +29,6 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "net-protocol"
+  # spec.add_dependency "digest"
+  spec.add_dependency "timeout"
 end