diff --git a/aiohttp/_websocket/reader_py.py b/aiohttp/_websocket/reader_py.py
index c434303c710..12cd1b8616f 100644
--- a/aiohttp/_websocket/reader_py.py
+++ b/aiohttp/_websocket/reader_py.py
@@ -5,7 +5,6 @@
 import sys
 import weakref
 from collections import deque
-from typing import Final
 
 from ..base_protocol import BaseProtocol
 from ..compression_utils import TooManyMembersError, ZLibDecompressor
@@ -65,9 +64,9 @@
 
 # Overhead added to each message to ensure that tiny messages can't use
 # unreasonable amounts of memory.
-MSG_SIZE_OVERHEAD: Final[int] = 128
+MSG_SIZE_OVERHEAD = 128
 
-STALLED_READER_COLLECTED: Final[str] = (
+STALLED_READER_COLLECTED = (
     "WebSocketReader was garbage collected while stalled; "
     "callers of set_parser() must hold a strong reference"
 )
diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index 09e5be9e735..deab645afe8 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -71,7 +71,7 @@ coverage==7.15.4
     #   pytest-cov
 cryptography==50.0.0
     # via trustme
-cython==3.2.9
+cython==3.3.0
     # via -r requirements/cython.in
 distlib==0.4.3
     # via virtualenv
diff --git a/requirements/cython.txt b/requirements/cython.txt
index 0a464ba33df..cc286a5f8be 100644
--- a/requirements/cython.txt
+++ b/requirements/cython.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile --allow-unsafe --output-file=requirements/cython.txt --resolver=backtracking --strip-extras requirements/cython.in
 #
-cython==3.2.9
+cython==3.3.0
     # via -r requirements/cython.in
 multidict==6.7.1
     # via -r requirements/multidict.in