diff --git a/modules/server/game/minecraft/default.nix b/modules/server/game/minecraft/default.nix
index fa38ddab..a3434918 100644
--- a/modules/server/game/minecraft/default.nix
+++ b/modules/server/game/minecraft/default.nix
@@ -20,6 +20,7 @@ in {
         modpack = pkgs.fetchPackwizModpack {
           url =
             "https://git.sako.lol/sako/sakopack/raw/branch/master/pack.toml";
+          hash = "sha256-PwZEorwK+ysdTvj+MoSOBLZ+czt+J8gxdmA1gCGjqa0=";
         };
         mcVersion = modpack.manifest.versions.minecraft;
         fabricVersion = modpack.manifest.versions.fabric;