--- a/quex/input/code/base.py	2020-08-17 11:27:16.948578316 +0200
+++ b/quex/input/code/base.py	2020-08-17 11:27:27.604426654 +0200
@@ -123,7 +123,7 @@
     def set_source_reference(self, SourceReference): 
         self.__source_reference = SourceReference
 
-    @typed(Re=re._pattern_type)
+    @typed(Re=re.Pattern)
     def contains_string(self, Re):  return self.__check_code(lambda x: Re.search(x) is not None)
     def is_empty(self):             return not self.__check_code(lambda x: len(x) != 0)
     def is_whitespace(self):        return not self.__check_code(lambda x: len(x.strip()) != 0)