diff --git a/lib/JSON/SL/Tuba.pm b/lib/JSON/SL/Tuba.pm
index 0e8c878..32d60e0 100644
--- a/lib/JSON/SL/Tuba.pm
+++ b/lib/JSON/SL/Tuba.pm
@@ -119,6 +119,7 @@ foreach (['key', '#'],
 
 __END__
 
+=encoding utf8
 
 =head1 NAME