diff --git a/pkgs/applications/office/zanshin/default.nix b/pkgs/applications/office/zanshin/default.nix
index 843e7ec0145e..57947e23baa0 100644
--- a/pkgs/applications/office/zanshin/default.nix
+++ b/pkgs/applications/office/zanshin/default.nix
@@ -1,55 +1,31 @@
 { mkDerivation
 , lib
 , fetchurl
-, fetchpatch
 , extra-cmake-modules
-, qtbase
 , boost
 , akonadi-calendar
-, akonadi-notes
-, akonadi-search
-, kidentitymanagement
 , kontactinterface
-, kldap
 , krunner
-, kwallet
-, kcalendarcore
 }:
 
 mkDerivation rec {
   pname = "zanshin";
-  version = "0.5.71";
+  version = "21.12.0";
 
   src = fetchurl {
-    url = "mirror://kde/stable/${pname}/${pname}-${version}.tar.xz";
-    sha256 = "0b316ddcd46sawva84x5d8nsp19v66gbm83djrra7fv3k8nkv4xh";
+    url = "mirror://kde/stable/release-service/${version}/src/zanshin-${version}.tar.xz";
+    sha256 = "sha256-l8W47tS7q747fkSAH3HJdwPsqjMfCyxzl3xJEeAXeh0=";
   };
 
-  patches = [
-    # Build with kontactinterface >= 5.14.42.
-    # Remove after next release.
-    (fetchpatch {
-      url = "https://invent.kde.org/pim/zanshin/-/commit/4850c08998b33b37af99c3312d193b063b3e8174.diff";
-      sha256 = "sha256:0lh0a035alhmws3zyfnkb814drq5cqxvzpwl4g1g5d435gy8k4ps";
-    })
-  ];
-
   nativeBuildInputs = [
     extra-cmake-modules
   ];
 
   buildInputs = [
-    qtbase
     boost
     akonadi-calendar
-    akonadi-notes
-    akonadi-search
-    kidentitymanagement
     kontactinterface
-    kldap
     krunner
-    kwallet
-    kcalendarcore
   ];
 
   meta = with lib; {