diff --git a/pkgs/applications/misc/heimer/default.nix b/pkgs/applications/misc/heimer/default.nix
index b9fd78bfaf1c..b4d31298c87c 100644
--- a/pkgs/applications/misc/heimer/default.nix
+++ b/pkgs/applications/misc/heimer/default.nix
@@ -2,6 +2,7 @@
   lib,
   mkDerivation,
   fetchFromGitHub,
+  fetchpatch,
   cmake,
   qttools,
   qtbase,
@@ -18,6 +19,20 @@ mkDerivation rec {
     hash = "sha256-eKnGCYxC3b7qd/g2IMDyZveBg+jvFA9s3tWEGeTPSkU=";
   };
 
+  patches = [
+    # Fix the build with CMake 4
+    (fetchpatch {
+      name = "update-Argengine.patch";
+      url = "https://github.com/juzzlin/Heimer/commit/76d9e8458038d2da4171be3a58766b84334119e8.patch";
+      hash = "sha256-mFzfxxhaJ1jdwfFVo36N66+jzS/scEeray1s75c+T8M=";
+    })
+    (fetchpatch {
+      name = "update-SimpleLogger.patch";
+      url = "https://github.com/juzzlin/Heimer/commit/75bff37b6ebd02d9f734e70ee4d3c10ec0291e0d.patch";
+      hash = "sha256-ZPj5GaM13UsGwJbc0NW0xJd07agZT+g86674i3apqWY=";
+    })
+  ];
+
   nativeBuildInputs = [
     cmake
   ];