diff --git a/python-protocol/adder_v5.py b/python-protocol/adder_v5.py
index f0b36324df..787c582869 100644
--- a/python-protocol/adder_v5.py
+++ b/python-protocol/adder_v5.py
@@ -1,8 +1,8 @@
 from typing import Protocol
 
 
-class Adder(Protocol):
-    def add[T: int | float | str](self, x: T, y: T) -> T: ...
+class Adder[T: int | float | str](Protocol):
+    def add(self, x: T, y: T) -> T: ...
 
 
 class IntAdder:
diff --git a/python-protocol/adder_v6.py b/python-protocol/adder_v6.py
index 3559ce1a9a..cecba94bf4 100644
--- a/python-protocol/adder_v6.py
+++ b/python-protocol/adder_v6.py
@@ -1,8 +1,8 @@
 from typing import Protocol
 
 
-class Adder(Protocol):
-    def add[T: int | float | str](self, x: T, y: T) -> T: ...
+class Adder[T: int | float | str](Protocol):
+    def add(self, x: T, y: T) -> T: ...
 
 
 class IntAdder: