diff --git a/pkgs/applications/misc/cubocore-packages/libcprime/default.nix b/pkgs/applications/misc/cubocore-packages/libcprime/default.nix
index 28f426b274b1..7bfde551bb3d 100644
--- a/pkgs/applications/misc/cubocore-packages/libcprime/default.nix
+++ b/pkgs/applications/misc/cubocore-packages/libcprime/default.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitLab,
+  fetchpatch,
   libnotify,
   cmake,
   ninja,
@@ -21,6 +22,13 @@ stdenv.mkDerivation (finalAttrs: {
 
   patches = [
     ./0001-fix-application-dirs.patch
+
+    # cmake-4 support
+    (fetchpatch {
+      name = "cmake-4.patch";
+      url = "https://gitlab.com/cubocore/libcprime/-/commit/505931e9634d1b55ea97bdaa0f68dcd51faaea39.patch";
+      hash = "sha256-toWG78tW6qOETTMb63/WtSyIiGkJ00RlPyGTqrWPnLY=";
+    })
   ];
 
   nativeBuildInputs = [