diff --git a/pkgs/development/python-modules/pytest-flake8/default.nix b/pkgs/development/python-modules/pytest-flake8/default.nix
index b39737ea7019..2b615e5820e9 100644
--- a/pkgs/development/python-modules/pytest-flake8/default.nix
+++ b/pkgs/development/python-modules/pytest-flake8/default.nix
@@ -3,7 +3,7 @@
 buildPythonPackage rec {
   name = "${pname}-${version}";
   pname = "pytest-flake8";
-  version = "0.8.1";
+  version = "0.9.1";
 
   # although pytest is a runtime dependency, do not add it as
   # propagatedBuildInputs in order to allow packages depend on another version
@@ -13,19 +13,9 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1za5i09gz127yraigmcl443w6149714l279rmlfxg1bl2kdsc45a";
+    sha256 = "0032l4x2i5qn7ikaaw0kjs9f4ccpas21j564spyxwmx50wnhf5p7";
   };
 
-  patches = [
-    # Fix pytest strict mode (pull request #24)
-    # https://github.com/tholo/pytest-flake8/pull/24
-    (fetchpatch {
-      name = "fix-compatibility-with-pytest-strict-mode.patch";
-      url = "https://github.com/tholo/pytest-flake8/commit/434e1b07b4b77bfe1ddb9b2b54470c6c3815bb1a.patch";
-      sha256 = "0idwgkwwysx2cibnykd81yxrgqzkpf42j99jmpnanqzi99qnc3wx";
-    })
-  ];
-
   checkPhase = ''
     pytest --ignore=nix_run_setup.py .
   '';