diff --git a/lib/src/sign_tool.dart b/lib/src/sign_tool.dart
index b5bd697..dd79c5c 100644
--- a/lib/src/sign_tool.dart
+++ b/lib/src/sign_tool.dart
@@ -9,7 +9,7 @@ import 'method_extensions.dart';
 import 'configuration.dart';
 
 RegExp _publisherRegex = RegExp(
-    '(CN|L|O|OU|E|C|S|STREET|T|G|I|SN|DC|SERIALNUMBER|(OID.(0|[1-9][0-9]*)(.(0|[1-9][0-9]*))+))=(([^,+="<>#;])+|".*")(, ((CN|L|O|OU|E|C|S|STREET|T|G|I|SN|DC|SERIALNUMBER|(OID.(0|[1-9][0-9]*)(.(0|[1-9][0-9]*))+))=(([^,+="<>#;])+|".*")))*');
+    '(CN|L|O|OU|E|C|S|ST|STREET|T|G|I|SN|DC|SERIALNUMBER|(OID.(0|[1-9][0-9]*)(.(0|[1-9][0-9]*))+))=(([^,+="<>#;])+|".*")(, ((CN|L|O|OU|E|C|S|STREET|T|G|I|SN|DC|SERIALNUMBER|(OID.(0|[1-9][0-9]*)(.(0|[1-9][0-9]*))+))=(([^,+="<>#;])+|".*")))*');
 
 /// Handles the certificate sign functionality
 class SignTool {