diff --git a/pkgs/development/python-modules/pytest-subprocess/default.nix b/pkgs/development/python-modules/pytest-subprocess/default.nix
new file mode 100644
index 00000000000..d0c54c1acfb
--- /dev/null
+++ b/pkgs/development/python-modules/pytest-subprocess/default.nix
@@ -0,0 +1,45 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, pytest
+, pytestCheckHook
+, docutils
+, pygments
+}:
+
+buildPythonPackage rec {
+  pname = "pytest-subprocess";
+  version = "1.0.1";
+
+  disabled = pythonOlder "3.4";
+
+  src = fetchFromGitHub {
+    owner = "aklajnert";
+    repo = "pytest-subprocess";
+    rev = version;
+    sha256 = "16ghwyv1vy45dd9cysjvcvvpm45958x071id2qrvgaziy2j6yx3j";
+  };
+
+  buildInputs = [
+    pytest
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    docutils
+    pygments
+  ];
+
+  disabledTests = [
+    "test_multiple_wait" # https://github.com/aklajnert/pytest-subprocess/issues/36
+  ];
+
+  meta = with lib; {
+    description = "A plugin to fake subprocess for pytest";
+    homepage = "https://github.com/aklajnert/pytest-subprocess";
+    changelog = "https://github.com/aklajnert/pytest-subprocess/blob/${version}/HISTORY.rst";
+    license = licenses.mit;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}
diff --git a/pkgs/tools/audio/spotdl/default.nix b/pkgs/tools/audio/spotdl/default.nix
index 520af8404ae..5dc6e39f8d2 100644
--- a/pkgs/tools/audio/spotdl/default.nix
+++ b/pkgs/tools/audio/spotdl/default.nix
@@ -1,20 +1,30 @@
 { lib
 , python3
 , fetchFromGitHub
+, fetchpatch
 , ffmpeg
 }:
 
 python3.pkgs.buildPythonApplication rec {
   pname = "spotdl";
-  version = "3.5.0";
+  version = "3.5.1";
 
   src = fetchFromGitHub {
     owner = "spotDL";
     repo = "spotify-downloader";
     rev = "v${version}";
-    sha256 = "1nxf911hi578jw24hlcvyy33z1pkvr41pfrywbs3157rj1fj2vfi";
+    sha256 = "sha256-Mc0aODyt0rwmBhkvY/gH1ODz4k8LOxyU5xXglSb6sPs=";
   };
 
+  patches = [
+    # https://github.com/spotDL/spotify-downloader/pull/1254
+    (fetchpatch {
+      name = "subprocess-dont-use-shell.patch";
+      url = "https://github.com/spotDL/spotify-downloader/commit/fe9848518900577776b463ef0798796201e226ac.patch";
+      sha256 = "1kqq3y31dcx1zglywr564hkd2px3qx6sk3rkg7yz8n5hnfjhp6fn";
+    })
+  ];
+
   propagatedBuildInputs = with python3.pkgs; [
     spotipy
     pytube
@@ -32,6 +42,7 @@ python3.pkgs.buildPythonApplication rec {
     pytest-mock
     pytest-vcr
     pyfakefs
+    pytest-subprocess
   ];
 
   makeWrapperArgs = [
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 8b67ba192c7..6fc8843a07d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -5226,6 +5226,8 @@ in {
 
   pyshark = callPackage ../development/python-modules/pyshark { };
 
+  pytest-subprocess = callPackage ../development/python-modules/pytest-subprocess { };
+
   python-codon-tables = callPackage ../development/python-modules/python-codon-tables { };
 
   python-csxcad = callPackage ../development/python-modules/python-csxcad { };