diff --git a/pkgs/development/python-modules/av/default.nix b/pkgs/development/python-modules/av/default.nix
index 3681904179e9..f123d3ccdd50 100644
--- a/pkgs/development/python-modules/av/default.nix
+++ b/pkgs/development/python-modules/av/default.nix
@@ -17,7 +17,7 @@
 
 buildPythonPackage rec {
   pname = "av";
-  version = "13.1.0";
+  version = "14.1.0";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     owner = "PyAV-Org";
     repo = "PyAV";
     tag = "v${version}";
-    hash = "sha256-x2a9SC4uRplC6p0cD7fZcepFpRidbr6JJEEOaGSWl60=";
+    hash = "sha256-GYdt6KMMmDSyby447MbShL2GbrH8R1UuOeiVlztGuS4=";
   };
 
   build-system = [
@@ -57,11 +57,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  disabledTests = [
-    # av.error.InvalidDataError: [Errno 1094995529] Invalid data found when processing input: 'custom_io_output.mpd'
-    "test_writing_to_custom_io_dash"
-  ];
-
   # `__darwinAllowLocalNetworking` doesn’t work for these; not sure why.
   disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
     "tests/test_timeout.py"
@@ -78,7 +73,6 @@ buildPythonPackage rec {
     "av.datasets"
     "av.descriptor"
     "av.dictionary"
-    "av.enum"
     "av.error"
     "av.filter"
     "av.format"
diff --git a/pkgs/development/python-modules/manim/default.nix b/pkgs/development/python-modules/manim/default.nix
index d4f476145303..ce0268daca80 100644
--- a/pkgs/development/python-modules/manim/default.nix
+++ b/pkgs/development/python-modules/manim/default.nix
@@ -268,6 +268,8 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "manim" ];
 
   meta = {
+    # https://github.com/ManimCommunity/manim/pull/4037
+    broken = lib.versionAtLeast av.version "14";
     description = "Animation engine for explanatory math videos - Community version";
     longDescription = ''
       Manim is an animation engine for explanatory math videos. It's used to
diff --git a/pkgs/servers/home-assistant/default.nix b/pkgs/servers/home-assistant/default.nix
index 806473fdde53..85857a585c01 100644
--- a/pkgs/servers/home-assistant/default.nix
+++ b/pkgs/servers/home-assistant/default.nix
@@ -108,6 +108,16 @@ let
         };
       });
 
+      av = super.av.overridePythonAttrs (rec {
+        version = "13.1.0";
+        src = fetchFromGitHub {
+          owner = "PyAV-Org";
+          repo = "PyAV";
+          tag = "v${version}";
+          hash = "sha256-x2a9SC4uRplC6p0cD7fZcepFpRidbr6JJEEOaGSWl60=";
+        };
+      });
+
       eq3btsmart = super.eq3btsmart.overridePythonAttrs (oldAttrs: rec {
         version = "1.4.1";
         src = fetchFromGitHub {
diff --git a/pkgs/servers/home-assistant/tests.nix b/pkgs/servers/home-assistant/tests.nix
index a45707b4cdb6..9660ad0f6424 100644
--- a/pkgs/servers/home-assistant/tests.nix
+++ b/pkgs/servers/home-assistant/tests.nix
@@ -67,6 +67,10 @@ let
       # tries to retrieve file from github
       "test_non_text_stdout_capture"
     ];
+    stream = [
+      # crashes with x265>=4.0
+      "test_h265_video_is_hvc1"
+    ];
     websocket_api = [
       # AssertionError: assert 'unknown_error' == 'template_error'
       "test_render_template_with_timeout"