diff --git a/flake.nix b/flake.nix
index b83c310..613a915 100644
--- a/flake.nix
+++ b/flake.nix
@@ -29,7 +29,7 @@
 
           src = pkgs.fetchurl {
             url = "https://github.com/cinnyapp/cinny-desktop/releases/download/v${version}/Cinny_desktop-x86_64.AppImage";
-            sha256 = "";
+            sha256 = "sha256-AhbwDL4p9xo3QrRaavqGcr8dvm1D1FWUBcaCNrkkOhw=";
           };
 
           extraInstallCommands = ''