diff --git a/pika-stubs/spec.pyi b/pika-stubs/spec.pyi
index 85d730b..4900d20 100644
--- a/pika-stubs/spec.pyi
+++ b/pika-stubs/spec.pyi
@@ -667,8 +667,8 @@ class Basic(amqp_object.Class):
         INDEX: Literal[0x003C0015]
         NAME: Literal["Basic.ConsumeOk"]
 
-        consumer_tag: int | None = ...
-        def __init__(self, consumer_tag: int | None = ...) -> None: ...
+        consumer_tag: str | None = ...
+        def __init__(self, consumer_tag: str | None = ...) -> None: ...
         @property
         def synchronous(self) -> bool: ...
         def decode(self, encoded: bytes, offset: int = ...) -> Basic.ConsumeOk: ...
@@ -678,9 +678,9 @@ class Basic(amqp_object.Class):
         INDEX: Literal[0x003C001E]
         NAME: Literal["Basic.Cancel"]
 
-        consumer_tag: int | None = ...
+        consumer_tag: str | None = ...
         nowait: bool = ...
-        def __init__(self, consumer_tag: int | None = ..., nowait: bool = ...) -> None: ...
+        def __init__(self, consumer_tag: str | None = ..., nowait: bool = ...) -> None: ...
         @property
         def synchronous(self) -> bool: ...
         def decode(self, encoded: bytes, offset: int = ...) -> Basic.Cancel: ...
@@ -690,8 +690,8 @@ class Basic(amqp_object.Class):
         INDEX: Literal[0x003C001F]
         NAME: Literal["Basic.CancelOk"]
 
-        consumer_tag: int | None = ...
-        def __init__(self, consumer_tag: int | None = ...) -> None: ...
+        consumer_tag: str | None = ...
+        def __init__(self, consumer_tag: str | None = ...) -> None: ...
         @property
         def synchronous(self) -> bool: ...
         def decode(self, encoded: bytes, offset: int = ...) -> Basic.CancelOk: ...