diff --git a/bindings/ruby/sig/whisper.rbs b/bindings/ruby/sig/whisper.rbs
index 1e2befc0a..a05b2d1da 100644
--- a/bindings/ruby/sig/whisper.rbs
+++ b/bindings/ruby/sig/whisper.rbs
@@ -618,6 +618,7 @@ module Whisper
     #
     def self.log_set: (nil, Object? user_data) -> nil
                     | (^(Integer level, String message, Object user_data) -> void, Object? user_data) -> nil
+    def self.system_info_str: () -> String
 
     class Context
       include Output::Context