diff --git a/pkgs/development/python-modules/dulwich/default.nix b/pkgs/development/python-modules/dulwich/default.nix
index d95fef43fad0..412009cc637a 100644
--- a/pkgs/development/python-modules/dulwich/default.nix
+++ b/pkgs/development/python-modules/dulwich/default.nix
@@ -8,16 +8,17 @@
 , geventhttpclient
 , git
 , glibcLocales
+, gnupg
 , gpgme
 , mock
-, pkgs
 , urllib3
 , paramiko
+, pytestCheckHook
 , pythonOlder
 }:
 
 buildPythonPackage rec {
-  version = "0.20.45";
+  version = "0.20.46";
   pname = "dulwich";
   format = "setuptools";
 
@@ -25,7 +26,7 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-cHEN2coqRCGQx+UGiS2wdMMYrHYuIh91KbjONIAgQbc=";
+    hash = "sha256-Tw6I//9dsVI9k9kvFSX+X6FhMY/7qtUCwbmzvnoGcXI=";
   };
 
   LC_ALL = "en_US.UTF-8";
@@ -42,13 +43,28 @@ buildPythonPackage rec {
     git
     glibcLocales
     gpgme
-    pkgs.gnupg
+    gnupg
     mock
     paramiko
+    pytestCheckHook
   ];
 
   doCheck = !stdenv.isDarwin;
 
+  disabledTests = [
+    # OSError: [Errno 84] Invalid or incomplete multibyte or wide character: b'/build/tmpsqwlbpd1/\xc0'
+    "test_no_decode_encode"
+    # OSError: [Errno 84] Invalid or incomplete multibyte or wide character: b'/build/tmpwmtfyvo2/refs.git/refs/heads/\xcd\xee\xe2\xe0\xff\xe2\xe5\xf2\xea\xe01'
+    "test_cyrillic"
+    # OSError: [Errno 84] Invalid or incomplete multibyte or wide character: b'/build/tmpfseetobk/test/\xc0'
+    "test_commit_no_encode_decode"
+  ];
+
+  disabledTestPaths = [
+    # missing test inputs
+    "dulwich/contrib/test_swift_smoke.py"
+  ];
+
   pythonImportsCheck = [
     "dulwich"
   ];
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index dd6534158ec3..3e732e442297 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2816,7 +2816,9 @@ in {
 
   dugong = callPackage ../development/python-modules/dugong { };
 
-  dulwich = callPackage ../development/python-modules/dulwich { };
+  dulwich = callPackage ../development/python-modules/dulwich {
+    inherit (pkgs) gnupg;
+  };
 
   dunamai = callPackage ../development/python-modules/dunamai { };