diff --git a/modules/services/minecraft-server/minecraft-server.nix b/modules/services/minecraft-server/minecraft-server.nix
index a9b9209..df4c0b6 100644
--- a/modules/services/minecraft-server/minecraft-server.nix
+++ b/modules/services/minecraft-server/minecraft-server.nix
@@ -51,7 +51,8 @@
         servers.vanilla = lib.optionalAttrs cfg.enable {
           enable = true;
           autoStart = false;
-          package = pkgs.minecraftServers.vanilla-1_21;
+          package = pkgs.vanillaServers.vanilla-26_1_2;
+          jvmOpts = "-Xms4G -Xmx4G";
           serverProperties = {
             motd = "Woher kommt der Stein?";
             white-list = true;