diff --git a/pkgs/applications/misc/klipper-estimator/default.nix b/pkgs/applications/misc/klipper-estimator/default.nix
index 967eac699f01..609414f21d7f 100644
--- a/pkgs/applications/misc/klipper-estimator/default.nix
+++ b/pkgs/applications/misc/klipper-estimator/default.nix
@@ -24,6 +24,8 @@ rustPlatform.buildRustPackage rec {
   useFetchCargoVendor = true;
   cargoHash = "sha256-wMgFkzgoHjvE+5t+cA5OW2COXbUj/5tWXz0Zp9cd5lw=";
 
+  env.TOOL_VERSION = "v${version}";
+
   buildInputs =
     [ openssl ]
     ++ lib.optionals stdenv.hostPlatform.isDarwin [