diff --git a/lib/httpx/plugins/proxy/socks4.rb b/lib/httpx/plugins/proxy/socks4.rb
index c304930b..05e55711 100644
--- a/lib/httpx/plugins/proxy/socks4.rb
+++ b/lib/httpx/plugins/proxy/socks4.rb
@@ -67,6 +67,9 @@ module HTTPX
             @options = Options.new(options)
           end
 
+          def close
+          end
+
           def consume(*)
           end
 
diff --git a/lib/httpx/plugins/proxy/socks5.rb b/lib/httpx/plugins/proxy/socks5.rb
index 6871762f..de26b846 100644
--- a/lib/httpx/plugins/proxy/socks5.rb
+++ b/lib/httpx/plugins/proxy/socks5.rb
@@ -95,6 +95,9 @@ module HTTPX
             @options = Options.new(options)
           end
 
+          def close
+          end
+
           def consume(*)
           end