diff --git a/services/minecraft.nix b/services/minecraft.nix
index c01ac6c..42b38c4 100644
--- a/services/minecraft.nix
+++ b/services/minecraft.nix
@@ -39,7 +39,7 @@
 
       jvmOpts =
         let
-          heap_size = "4000M";
+          heap_size = "10000M";
         in
         "-Xmx${heap_size} -Xms${heap_size} -XX:+UseZGC -XX:+ZGenerational";
 
@@ -117,6 +117,11 @@
               url = "https://cdn.modrinth.com/data/fQEb0iXm/versions/neW85eWt/krypton-0.2.9.jar";
               sha512 = "2e2304b1b17ecf95783aee92e26e54c9bfad325c7dfcd14deebf9891266eb2933db00ff77885caa083faa96f09c551eb56f93cf73b357789cb31edad4939ffeb";
             };
+
+            spark = fetchurl {
+              url = "https://cdn.modrinth.com/data/l6YH9Als/versions/65SnrRgF/spark-1.10.138-fabric.jar";
+              sha512 = "c2bdb171c7ec1783f9efb0ff9a995433fd5838bd8571896be4f498c857ae9f2242d3f24c0541cd96049ea29d742a0e3f8077a3bd1af5d79654f19d34a3adc79c";
+            };
           }
         );
       };