diff --git a/pkgs/applications/office/kitsas/default.nix b/pkgs/applications/office/kitsas/default.nix
deleted file mode 100644
index 9821cdd2f2f8..000000000000
--- a/pkgs/applications/office/kitsas/default.nix
+++ /dev/null
@@ -1,49 +0,0 @@
-{ lib, stdenv, fetchFromGitHub, qmake, qtsvg, poppler, libzip, pkg-config, wrapQtAppsHook }:
-
-stdenv.mkDerivation rec {
-  pname = "kitsas";
-  version = "4.0.5";
-
-  src = fetchFromGitHub {
-    owner = "artoh";
-    repo = "kitupiikki";
-    rev = "v${version}";
-    hash = "sha256-ODl1yrtrCVhuBWbA1AvHl22d+JSdySG/Gi2hlpVW3jg=";
-  };
-
-  postPatch = ''
-    substituteInPlace kitsas/kitsas.pro \
-      --replace "LIBS += -L/usr/local/opt/poppler-qt5/lib -lpoppler-qt6" "LIBS += -lpoppler-qt5"
-  '';
-
-  nativeBuildInputs = [ pkg-config qmake wrapQtAppsHook ];
-
-  buildInputs = [ qtsvg poppler libzip ];
-
-  # We use a separate build-dir as otherwise ld seems to get confused between
-  # directory and executable name on buildPhase.
-  preConfigure = ''
-    mkdir build && cd build
-  '';
-
-  qmakeFlags = [ "../kitsas/kitsas.pro" ];
-
-  installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
-    mkdir -p $out/Applications
-    mv kitsas.app $out/Applications
-  '' + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
-    install -Dm755 kitsas -t $out/bin
-    install -Dm644 ../kitsas.svg -t $out/share/icons/hicolor/scalable/apps
-    install -Dm644 ../kitsas.png -t $out/share/icons/hicolor/256x256/apps
-    install -Dm644 ../kitsas.desktop -t $out/share/applications
-  '';
-
-  meta = with lib; {
-    homepage = "https://github.com/artoh/kitupiikki";
-    description = "Accounting tool suitable for Finnish associations and small business";
-    mainProgram = "kitsas";
-    maintainers = with maintainers; [ gspia ];
-    license = licenses.gpl3Plus;
-    platforms = platforms.unix;
-  };
-}
diff --git a/pkgs/by-name/ki/kitsas/package.nix b/pkgs/by-name/ki/kitsas/package.nix
new file mode 100644
index 000000000000..854c53cc5327
--- /dev/null
+++ b/pkgs/by-name/ki/kitsas/package.nix
@@ -0,0 +1,68 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  qt6,
+  poppler,
+  libzip,
+  pkg-config,
+}:
+
+stdenv.mkDerivation rec {
+  pname = "kitsas";
+  version = "5.7";
+
+  src = fetchFromGitHub {
+    owner = "artoh";
+    repo = "kitupiikki";
+    rev = "v${version}";
+    hash = "sha256-1TZFw1Q9+FsGHwitErDhwyA941rtb+h9OgJLFLyhV7k=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+    qt6.qmake
+    qt6.wrapQtAppsHook
+  ];
+
+  buildInputs =
+    [
+      libzip
+      poppler
+      qt6.qt5compat
+      qt6.qtsvg
+      qt6.qtwebengine
+    ]
+    ++ lib.optional stdenv.hostPlatform.isLinux [
+      qt6.qtwayland
+    ];
+
+  # We use a separate build-dir as otherwise ld seems to get confused between
+  # directory and executable name on buildPhase.
+  preConfigure = ''
+    mkdir build && cd build
+  '';
+
+  qmakeFlags = [ "../kitsas/kitsas.pro" ];
+
+  installPhase =
+    lib.optionalString stdenv.hostPlatform.isDarwin ''
+      mkdir -p $out/Applications
+      mv kitsas.app $out/Applications
+    ''
+    + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
+      install -Dm755 kitsas -t $out/bin
+      install -Dm644 ../kitsas.svg -t $out/share/icons/hicolor/scalable/apps
+      install -Dm644 ../kitsas.png -t $out/share/icons/hicolor/256x256/apps
+      install -Dm644 ../kitsas.desktop -t $out/share/applications
+    '';
+
+  meta = with lib; {
+    homepage = "https://github.com/artoh/kitupiikki";
+    description = "Accounting tool suitable for Finnish associations and small business";
+    mainProgram = "kitsas";
+    maintainers = with maintainers; [ gspia ];
+    license = licenses.gpl3Plus;
+    platforms = platforms.unix;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index fa3c31089af6..fa706277aefd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -30225,8 +30225,6 @@ with pkgs;
 
   kile = callPackage ../applications/editors/kile { };
 
-  kitsas = libsForQt5.callPackage ../applications/office/kitsas { };
-
   kiwix = libsForQt5.callPackage ../applications/misc/kiwix { };
 
   kiwix-tools = callPackage ../applications/misc/kiwix/tools.nix { };