diff --git a/pkgs/development/python-modules/av/default.nix b/pkgs/development/python-modules/av/default.nix
index c79dc8b3fcb1..3ebc44d1c4d6 100644
--- a/pkgs/development/python-modules/av/default.nix
+++ b/pkgs/development/python-modules/av/default.nix
@@ -1,33 +1,141 @@
 { lib
 , buildPythonPackage
-, fetchPypi
-, isPy27
-, numpy
-, ffmpeg
+, fetchFromGitHub
+, pythonOlder
+
+# build
+, cython
 , pkg-config
+
+# runtime
+, ffmpeg
+
+# tests
+, numpy
+, pillow
+, pytestCheckHook
 }:
 
 buildPythonPackage rec {
   pname = "av";
-  version = "8.1.0";
-  disabled = isPy27; # setup.py no longer compatible
+  version = "9.1.1";
+  format = "pyproject";
+  disabled = pythonOlder "3.7";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "0402169bc27e38e0f44e0e0e1854cf488337e86206b6d25d6dae2bfd7a1a0230";
+  src = fetchFromGitHub {
+    owner = "mikeboers";
+    repo = "PyAV";
+    rev = "v${version}";
+    hash = "sha256-/6C5GE9zANPy0xaptu/+pIupOLDra/R7TJ41YLGszUs=";
   };
 
-  checkInputs = [ numpy ];
+  nativeBuildInputs = [
+    cython
+    pkg-config
+  ];
 
-  nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ ffmpeg ];
+  buildInputs = [
+    ffmpeg
+  ];
 
-  # Tests require downloading files from internet
-  doCheck = false;
+  preCheck = ''
+    # ensure we import the built version
+    rm -r av
+  '';
 
-  meta = {
+  checkInputs = [
+    numpy
+    pillow
+    pytestCheckHook
+  ];
+
+  pytestFlagsArray = [
+    # Tests that want to download FATE data
+    # https://github.com/PyAV-Org/PyAV/issues/955
+    "--deselect=tests/test_audiofifo.py::TestAudioFifo::test_data"
+    "--deselect=tests/test_codec_context.py::TestCodecContext::test_codec_tag"
+    "--deselect=tests/test_codec_context.py::TestCodecContext::test_parse"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_aac"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_dnxhd"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_dvvideo"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_h264"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_mjpeg"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_mp2"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_mpeg1video"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_mpeg4"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_pcm_s24le"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_png"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_tiff"
+    "--deselect=tests/test_codec_context.py::TestEncoding::test_encoding_xvid"
+    "--deselect=tests/test_decode.py::TestDecode::test_decode_audio_sample_count"
+    "--deselect=tests/test_decode.py::TestDecode::test_decoded_motion_vectors"
+    "--deselect=tests/test_decode.py::TestDecode::test_decoded_motion_vectors_no_flag"
+    "--deselect=tests/test_decode.py::TestDecode::test_decoded_time_base"
+    "--deselect=tests/test_decode.py::TestDecode::test_decoded_video_frame_count"
+    "--deselect=tests/test_encode.py::TestBasicAudioEncoding::test_transcode"
+    "--deselect=tests/test_file_probing.py::TestAudioProbe::test_container_probing"
+    "--deselect=tests/test_file_probing.py::TestAudioProbe::test_stream_probing"
+    "--deselect=tests/test_file_probing.py::TestDataProbe::test_container_probing"
+    "--deselect=tests/test_file_probing.py::TestDataProbe::test_stream_probing"
+    "--deselect=tests/test_file_probing.py::TestSubtitleProbe::test_container_probing"
+    "--deselect=tests/test_file_probing.py::TestSubtitleProbe::test_stream_probing"
+    "--deselect=tests/test_file_probing.py::TestVideoProbe::test_container_probing"
+    "--deselect=tests/test_file_probing.py::TestVideoProbe::test_stream_probing"
+    "--deselect=tests/test_python_io.py::TestPythonIO::test_reading_from_buffer"
+    "--deselect=tests/test_python_io.py::TestPythonIO::test_reading_from_buffer_no_see"
+    "--deselect=tests/test_python_io.py::TestPythonIO::test_reading_from_file"
+    "--deselect=tests/test_python_io.py::TestPythonIO::test_reading_from_pipe_readonly"
+    "--deselect=tests/test_python_io.py::TestPythonIO::test_reading_from_write_readonl"
+    "--deselect=tests/test_seek.py::TestSeek::test_decode_half"
+    "--deselect=tests/test_seek.py::TestSeek::test_seek_end"
+    "--deselect=tests/test_seek.py::TestSeek::test_seek_float"
+    "--deselect=tests/test_seek.py::TestSeek::test_seek_int64"
+    "--deselect=tests/test_seek.py::TestSeek::test_seek_middle"
+    "--deselect=tests/test_seek.py::TestSeek::test_seek_start"
+    "--deselect=tests/test_seek.py::TestSeek::test_stream_seek"
+    "--deselect=tests/test_streams.py::TestStreams::test_selection"
+    "--deselect=tests/test_streams.py::TestStreams::test_stream_tuples"
+    "--deselect=tests/test_subtitles.py::TestSubtitle::test_movtext"
+    "--deselect=tests/test_subtitles.py::TestSubtitle::test_vobsub"
+    "--deselect=tests/test_videoframe.py::TestVideoFrameImage::test_roundtrip"
+  ];
+
+  disabledTestPaths = [
+    # urlopen fails during DNS resolution
+    "tests/test_doctests.py"
+    "tests/test_timeout.py"
+  ];
+
+  pythonImportsCheck = [
+    "av"
+    "av.audio"
+    "av.buffer"
+    "av.bytesource"
+    "av.codec"
+    "av.container"
+    "av._core"
+    "av.datasets"
+    "av.descriptor"
+    "av.dictionary"
+    "av.enum"
+    "av.error"
+    "av.filter"
+    "av.format"
+    "av.frame"
+    "av.logging"
+    "av.option"
+    "av.packet"
+    "av.plane"
+    "av.stream"
+    "av.subtitles"
+    "av.utils"
+    "av.video"
+  ];
+
+  meta = with lib; {
     description = "Pythonic bindings for FFmpeg/Libav";
     homepage = "https://github.com/mikeboers/PyAV/";
-    license = lib.licenses.bsd2;
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ ];
   };
 }