diff --git a/pkgs/applications/office/zanshin/default.nix b/pkgs/applications/office/zanshin/default.nix
index e3b9408ed96..c724c239a45 100644
--- a/pkgs/applications/office/zanshin/default.nix
+++ b/pkgs/applications/office/zanshin/default.nix
@@ -1,6 +1,7 @@
 { mkDerivation
 , lib
 , fetchurl
+, fetchpatch
 , extra-cmake-modules
 , qtbase
 , boost
@@ -24,6 +25,15 @@ mkDerivation rec {
     sha256 = "0b316ddcd46sawva84x5d8nsp19v66gbm83djrra7fv3k8nkv4xh";
   };
 
+  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
   ];