diff --git a/pkgs/development/python-modules/mutagen/default.nix b/pkgs/development/python-modules/mutagen/default.nix
index f91cc5e939e..0bd08a82b93 100644
--- a/pkgs/development/python-modules/mutagen/default.nix
+++ b/pkgs/development/python-modules/mutagen/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, fetchpatch
 , hypothesis
 , pycodestyle
 , pyflakes
@@ -17,6 +18,12 @@ buildPythonPackage rec {
     sha256 = "bb61e2456f59a9a4a259fbc08def6d01ba45a42da8eeaa97d00633b0ec5de71c";
   };
 
+  # fix tests with updated pycodestyle
+  patches = fetchpatch {
+    url = https://github.com/quodlibet/mutagen/commit/0ee86ef9d7e06639a388d0638732810b79998608.patch;
+    sha256 = "1bj3mpbv7krh5m1mvfl0z18s8wdxb1949zcnkcqxp2xl5fzsi288";
+  };
+
   checkInputs = [
     pkgs.faad2 pkgs.flac pkgs.vorbis-tools pkgs.liboggz
     pkgs.glibcLocales pycodestyle pyflakes pytest hypothesis