diff --git a/Makefile b/Makefile
index a9fb0876f..d6edf1893 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ fate-suite:
 	rsync -vrltLW rsync://fate-suite.ffmpeg.org/fate-suite/ tests/assets/fate-suite/
 
 lint:
-	$(PIP) install -U ruff isort pillow numpy mypy==1.19.1 pytest
+	$(PIP) install -U ruff isort pillow numpy mypy==2.1.0 pytest
 	ruff format --check av examples tests setup.py
 	isort --check-only --diff av examples tests
 	mypy av tests
diff --git a/tests/test_streams.py b/tests/test_streams.py
index 1afc67222..a78952013 100644
--- a/tests/test_streams.py
+++ b/tests/test_streams.py
@@ -245,8 +245,8 @@ def test_data_stream(self) -> None:
         # Verify we can read back all the packets, ignoring empty ones
         packets = [p for p in container.demux(data) if bytes(p)]
         assert len(packets) == len(test_data)
-        for packet, original_data in zip(packets, test_data):
-            assert bytes(packet) == original_data
+        for read_packet, original_data in zip(packets, test_data):
+            assert bytes(read_packet) == original_data
 
         # Test string representation
         repr = f"{data_stream}"