diff --git a/fluentd.gemspec b/fluentd.gemspec
index 21c224401a..b6fb75b87e 100644
--- a/fluentd.gemspec
+++ b/fluentd.gemspec
@@ -30,6 +30,8 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency("strptime", [">= 0.2.4", "< 1.0.0"])
   gem.add_runtime_dependency("webrick", ["~> 1.4"])
   gem.add_runtime_dependency("console", ["< 1.24"])
+  gem.add_runtime_dependency("uri", '~> 1.0')
+  gem.add_runtime_dependency("net-http", '~> 0.8')
 
   # gems that aren't default gems as of Ruby 3.4
   gem.add_runtime_dependency("base64", ["~> 0.2"])