diff --git a/overlays/unstable/default.nix b/overlays/unstable/default.nix
index 663f01f..c212a6e 100644
--- a/overlays/unstable/default.nix
+++ b/overlays/unstable/default.nix
@@ -22,6 +22,24 @@ final: prev: {
 
   # goose-cli = channels.unstable.callPackage ./goose.nix { };
   claude-code = channels.unstable.callPackage ./claude-code/package.nix { };
+
+  geekbench_6 = channels.unstable.geekbench_6.overrideAttrs (prevAttrs: rec {
+    version = "6.7.0";
+    src = prev.fetchurl (
+      {
+        "x86_64-linux" = {
+          url = "https://cdn.geekbench.com/Geekbench-${version}-Linux.tar.gz";
+          hash = "sha256-Snt3179Re/zwxop1pvzWF39TXXi8ZUBlNWB+v7+YE38=";
+        };
+        "aarch64-linux" = {
+          url = "https://cdn.geekbench.com/Geekbench-${version}-LinuxARMPreview.tar.gz";
+          hash = "sha256-GCAOKYyijaQPVBgAixoZRPHIdiUfV8mPeeflE7aX8Ac=";
+        };
+      }
+      .${prev.stdenv.system}
+        or (throw "unsupported system ${prev.stdenv.hostPlatform.system}")
+    );
+  });
   # gemini-cli = channels.unstable.callPackage ./gemini-cli/package.nix { };
   # vscode-extensions = channels.unstable.vscode-extensions // {
   #  rooveterinaryinc = { roo-cline = channels.unstable.callPackage ./roo-code.nix { }; };