diff --git a/flake.nix b/flake.nix
index 21b02c2..2745d52 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,7 +21,8 @@
       }) // {
         overlays.default = final: prev: {
           jlink = final.callPackage ./packages/jlink { };
-          kernelPatches = final.callPackage ./packages/kernelPatches { };
+          kernelPatches = prev.kernelPatches
+            // final.callPackage ./packages/kernelPatches { };
           zephyrPackages = final.callPackage ./packages/zephyr { };
         };
       };