diff --git a/flake.nix b/flake.nix
index 6e27a5a..9130d47 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,7 +16,12 @@
     packages.x86_64-linux."${pname}-unwrapped" = pkgs.rustPlatform.buildRustPackage ({
       inherit pname version;
       src = ./.;
-      cargoLock.lockFile = ./Cargo.lock;
+      cargoLock = {
+        lockFile = ./Cargo.lock;
+        outputHashes = {
+          "eggbug-0.1.3" = "sha256-dDnCJNnTJsah1HtrKoS5FxmHosBp5J6nfP4s7ugccog=";
+        };
+      };
     } // buildDeps);
 
     packages.x86_64-linux.${pname} = pkgs.symlinkJoin {