diff --git a/Interfaces.md b/Interfaces.md
index 58b60db..7d4130a 100644
--- a/Interfaces.md
+++ b/Interfaces.md
@@ -9,6 +9,6 @@ ggs_vm_runner:user_command(GameVM, User, Command, Args) -> ok
 ## ggs_server
 <pre>
 handle_cast(stop, State) -> {stop, normal, State}
-handle_cast({server, hello, Headers}, State) -> ok
-handle_cast({server, define, Headers, Data}, State) -> ok
-handle_cast({game, command, Headers, Data}, State) -> ok</pre>
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+handle_cast({server, hello, Headers}, State) -> {noreply, NewState}
+handle_cast({server, define, Headers, Data}, State) -> {noreply, NewState}
+handle_cast({game, command, Headers, Data}, State) -> {noreply, NewState}</pre>
\ No newline at end of file