diff --git a/lib/standby/active_record/log_subscriber.rb b/lib/standby/active_record/log_subscriber.rb
index 7cfe1e1..3e1faf4 100644
--- a/lib/standby/active_record/log_subscriber.rb
+++ b/lib/standby/active_record/log_subscriber.rb
@@ -4,9 +4,15 @@ class LogSubscriber
     alias_method :debug_without_standby, :debug
 
     def debug(msg)
-      db = Standby.disabled ? "" : color("[#{Thread.current[:_standby] || "primary"}]", ActiveSupport::LogSubscriber::GREEN, true)
+      db = Standby.disabled ? "" : log_header
       debug_without_standby(db + msg)
     end
 
+    def log_header
+      if "#{Rails::VERSION::MAJOR}.#{Rails::VERSION::MINOR}".to_f > 7.1
+        color("[#{Thread.current[:_standby] || "primary"}]", ActiveSupport::LogSubscriber::GREEN, bold: true)
+      else
+        color("[#{Thread.current[:_standby] || "primary"}]", ActiveSupport::LogSubscriber::GREEN, true)
+      end
   end
 end