diff --git a/README.md b/README.md
index 6314c62..9dcbf76 100644
--- a/README.md
+++ b/README.md
@@ -50,6 +50,7 @@ module ModelContextProtocol
     def index
       server = ModelContextProtocol::Server.new(
         name: "my_server",
+        version: "1.0.0",
         tools: [SomeTool, AnotherTool],
         prompts: [MyPrompt],
         server_context: { user_id: current_user.id },
diff --git a/examples/stdio_server.rb b/examples/stdio_server.rb
index 7c1a09a..631822e 100755
--- a/examples/stdio_server.rb
+++ b/examples/stdio_server.rb
@@ -54,6 +54,7 @@ end
 # Set up the server
 server = MCP::Server.new(
   name: "example_server",
+  version: "1.0.0",
   tools: [ExampleTool],
   prompts: [ExamplePrompt],
   resources: [