diff --git a/evmspec/data/_main.py b/evmspec/data/_main.py
index 3cf2771..9dc2099 100644
--- a/evmspec/data/_main.py
+++ b/evmspec/data/_main.py
@@ -20,6 +20,8 @@
 DecodeHook = Callable[[Type[_T], Any], _T]
 """A type alias for a function that decodes an object into a specific type."""
 
+__str_new__ = str.__new__
+__hb_new__ = HexBytes.__new__
 
 class Address(str):
     """
@@ -58,7 +60,7 @@ def __new__(cls, address: str):
         See Also:
             - `cchecksum.to_checksum_address`: Function used for checksum conversion.
         """
-        return str.__new__(cls, to_checksum_address(address))
+        return __str_new__(cls, to_checksum_address(address))
 
     @classmethod
     def _decode_hook(cls, typ: Type["Address"], obj: str):
@@ -342,7 +344,7 @@ def __new__(cls, v):
         except KeyError as e:
             raise ValueError(f"{v} is too long") from e.__cause__
 
-        return HexBytes.__new__(cls, missing_bytes + input_bytes)
+        return __hb_new__(cls, missing_bytes + input_bytes)
 
     def __repr__(self) -> str:
         return f"{type(self).__name__}({self.hex()})"