diff --git a/lib/kubeclient/common.rb b/lib/kubeclient/common.rb
index d83bd0c8..2f16091b 100644
--- a/lib/kubeclient/common.rb
+++ b/lib/kubeclient/common.rb
@@ -66,7 +66,7 @@ def initialize_client(
       @entities = {}
       @discovered = false
       @api_version = version
-      @headers = {}
+      @headers = { 'Host' => URI(uri).host }
       @ssl_options = ssl_options
       @auth_options = auth_options
       @socket_options = socket_options