diff --git a/mcp-client-ruby/Gemfile b/mcp-client-ruby/Gemfile
index abb8b873..d9f3d541 100644
--- a/mcp-client-ruby/Gemfile
+++ b/mcp-client-ruby/Gemfile
@@ -5,4 +5,4 @@ source "https://rubygems.org"
 gem "anthropic"
 gem "base64"
 gem "dotenv"
-gem "mcp", '>= 0.9.1'
+gem "mcp", '>= 0.15.0'
diff --git a/mcp-client-ruby/client.rb b/mcp-client-ruby/client.rb
index 1d609ae8..5feffb0f 100644
--- a/mcp-client-ruby/client.rb
+++ b/mcp-client-ruby/client.rb
@@ -28,6 +28,7 @@ def connect_to_server(server_script_path)
 
     @transport = MCP::Client::Stdio.new(command: command, args: [server_script_path])
     @mcp_client = MCP::Client.new(transport: @transport)
+    @mcp_client.connect
 
     tool_names = @mcp_client.tools.map(&:name)
     puts "\nConnected to server with tools: #{tool_names}"