diff --git a/nixos/hosts/ingress-proxy/default.nix b/nixos/hosts/ingress-proxy/default.nix
index bc2fc3e..c733fd6 100644
--- a/nixos/hosts/ingress-proxy/default.nix
+++ b/nixos/hosts/ingress-proxy/default.nix
@@ -84,6 +84,7 @@ in {
           src = builtins.fetchGit {
             url = "https://codeberg.org/noe/personal-site.git";
             ref = "main";
+            hash = "sha256-xxxxxxxxxxxxxx";
           };
           installPhase = "cp -r $src $out";
         };