diff --git a/pkgs/applications/audio/csound/csound-qt/default.nix b/pkgs/applications/audio/csound/csound-qt/default.nix
index 953a919d0c70..e48b45aec3e4 100644
--- a/pkgs/applications/audio/csound/csound-qt/default.nix
+++ b/pkgs/applications/audio/csound/csound-qt/default.nix
@@ -1,28 +1,23 @@
 { lib, stdenv, csound, desktop-file-utils,
   fetchFromGitHub, python, python-qt, qmake,
-  qtwebengine, qtxmlpatterns, rtmidi, fetchpatch }:
+  qtwebengine, qtxmlpatterns, rtmidi, wrapQtAppsHook }:
 
 stdenv.mkDerivation rec {
   pname = "csound-qt";
-  version = "0.9.6-beta3";
+  version = "1.1.1";
 
   src = fetchFromGitHub {
     owner = "CsoundQt";
     repo = "CsoundQt";
-    rev = version;
-    sha256 = "007jhkh0k6qk52r77i067999dwdiimazix6ggp2hvyc4pj6n5dip";
+    rev = "v${version}";
+    hash = "sha256-PdylVOnunbB36dbZX/wzd9A8CJPDv/xH5HPLAUkRu28=";
   };
 
   patches = [
-    (fetchpatch {
-      name = "examplepath.patch";
-      url = "https://github.com/CsoundQt/CsoundQt/commit/09f2d515bff638cbcacb450979d66e273a59fdec.diff";
-      sha256 = "0y23kf8m1mh9mklsvf908b2b8m2w2rji8qvws44paf1kpwnwdmgm";
-    })
     ./rtmidipath.patch
   ];
 
-  nativeBuildInputs = [ qmake qtwebengine qtxmlpatterns ];
+  nativeBuildInputs = [ qmake qtwebengine qtxmlpatterns wrapQtAppsHook ];
 
   buildInputs = [ csound desktop-file-utils rtmidi ];
 
@@ -35,13 +30,11 @@ stdenv.mkDerivation rec {
                  "PYTHONQT_LIB_DIR=${python-qt}/lib"
                  "LIBS+=-L${python-qt}/lib"
                  "INCLUDEPATH+=${python-qt}/include/PythonQt"
-                 "INCLUDEPATH+=${python}/include/python2.7"
+                 "INCLUDEPATH+=${python}/include/python${python.pythonVersion}"
                  "INSTALL_DIR=${placeholder "out"}"
                  "SHARE_DIR=${placeholder "out"}/share"
                  ];
 
-  dontWrapQtApps = true;
-
   meta = with lib; {
     description = "CsoundQt is a frontend for Csound with editor, integrated help, widgets and other features";
     homepage = "https://csoundqt.github.io/";
diff --git a/pkgs/applications/audio/csound/csound-qt/rtmidipath.patch b/pkgs/applications/audio/csound/csound-qt/rtmidipath.patch
index 4cbab8a128fc..4e22295d43ff 100644
--- a/pkgs/applications/audio/csound/csound-qt/rtmidipath.patch
+++ b/pkgs/applications/audio/csound/csound-qt/rtmidipath.patch
@@ -1,8 +1,8 @@
-diff --git a/src/src.pri b/src/src.pri
-index e5e0c896..9a9fa513 100644
---- a/src/src.pri
-+++ b/src/src.pri
-@@ -155,9 +155,9 @@ pythonqt {
+diff --git a/src/src.pri b/src/src.pri
+index e5e0c896..9a9fa513 100644
+--- a/src/src.pri
++++ b/src/src.pri
+@@ -155,9 +155,9 @@ pythonqt {
          "src/pyqcsobject.cpp"
  }
  rtmidi {
diff --git a/pkgs/development/libraries/python-qt/default.nix b/pkgs/development/libraries/python-qt/default.nix
index 2be89b3b7534..f4574a1704ef 100644
--- a/pkgs/development/libraries/python-qt/default.nix
+++ b/pkgs/development/libraries/python-qt/default.nix
@@ -1,26 +1,43 @@
-{ lib, stdenv, fetchurl, python, qmake,
+{ lib, stdenv, fetchFromGitHub, fetchpatch, python, qmake,
   qtwebengine, qtxmlpatterns,
   qttools, unzip }:
 
 stdenv.mkDerivation rec {
-  version = "3.2";
   pname = "python-qt";
+  version = "3.3.0";
 
-  src = fetchurl {
-    url="mirror://sourceforge/pythonqt/PythonQt${version}.zip";
-    sha256="13hzprk58m3yj39sj0xn6acg8796lll1256mpd81kw0z3yykyl8c";
+  src = fetchFromGitHub {
+    owner = "MeVisLab";
+    repo = "pythonqt";
+    rev = "v${version}";
+    hash = "sha256-zbQ6X4Q2/QChaw3GAz/aVBj2JjWEz52YuPuHbBz935k=";
   };
 
+  patches = [
+    (fetchpatch {
+      name = "remove-unneeded-pydebug-include.patch";
+      url = "https://github.com/MeVisLab/pythonqt/commit/a93104dea4d9c79351276ec963e931ca617625ec.patch";
+      includes = [ "src/PythonQt.cpp" ];
+      hash = "sha256-Tc4+6dIdvrda/z3Nz1s9Xz+ZWJLV2BQh8i552UynSI0=";
+    })
+  ];
+
+  # https://github.com/CsoundQt/CsoundQt/blob/develop/BUILDING.md#pythonqt
+  postPatch = ''
+    substituteInPlace build/python.prf \
+      --replace "unix:PYTHON_VERSION=2.7" "unix:PYTHON_VERSION=${python.pythonVersion}"
+  '';
+
   hardeningDisable = [ "all" ];
 
   nativeBuildInputs = [ qmake qtwebengine qtxmlpatterns qttools unzip ];
 
   buildInputs = [ python ];
 
-  qmakeFlags = [ "PythonQt.pro"
-                 "INCLUDEPATH+=${python}/include/python3.6"
-                 "PYTHON_PATH=${python}/bin"
-                 "PYTHON_LIB=${python}/lib"];
+  qmakeFlags = [
+    "PythonQt.pro"
+    "PYTHON_DIR=${python}"
+  ];
 
   dontWrapQtApps = true;
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2a59edddf426..957705e129e0 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -22350,7 +22350,7 @@ with pkgs;
   pylode = callPackage ../misc/pylode {};
 
   python-qt = callPackage ../development/libraries/python-qt {
-    python = python27;
+    python = python3;
     inherit (qt5) qmake qttools qtwebengine qtxmlpatterns;
   };
 
@@ -28204,7 +28204,7 @@ with pkgs;
   csound-manual = callPackage ../applications/audio/csound/csound-manual { };
 
   csound-qt = libsForQt5.callPackage ../applications/audio/csound/csound-qt {
-    python = python27;
+    python = python3;
   };
 
   codeblocks = callPackage ../applications/editors/codeblocks { };