diff --git a/flake.nix b/flake.nix
index fc8613b..d9bb322 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,7 +21,7 @@
             version = "0.1.0";
             src = ./.;
 
-            vendorHash = ""; # auto-computed; update with actual hash after first build
+            vendorHash = "sha256-PTD4eEEkLGBCZbot6W4U+sMOpIbH2tcFSztQel7hyXI=";
             # Run: nix build .#packages.x86_64-linux.default
             # It will fail with the correct hash. Replace vendorHash with it.