diff --git a/divinemc-server/src/main/java/org/bxteam/divinemc/util/Assertions.java b/divinemc-server/src/main/java/org/bxteam/divinemc/util/Assertions.java
deleted file mode 100644
index 98975c5..0000000
--- a/divinemc-server/src/main/java/org/bxteam/divinemc/util/Assertions.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package org.bxteam.divinemc.util;
-
-public final class Assertions {
-    public static void assertTrue(boolean value, String message) {
-        if (!value) {
-            final AssertionError error = new AssertionError(message);
-            error.printStackTrace();
-            throw error;
-        }
-    }
-
-    public static void assertTrue(boolean state, String format, Object... args) {
-        if (!state) {
-            final AssertionError error = new AssertionError(String.format(format, args));
-            error.printStackTrace();
-            throw error;
-        }
-    }
-
-    public static void assertTrue(boolean value) {
-        if (!value) {
-            final AssertionError error = new AssertionError();
-            error.printStackTrace();
-            throw error;
-        }
-    }
-}
diff --git a/divinemc-server/src/main/java/org/bxteam/divinemc/util/Files.java b/divinemc-server/src/main/java/org/bxteam/divinemc/util/Files.java
deleted file mode 100644
index 7d02eb2..0000000
--- a/divinemc-server/src/main/java/org/bxteam/divinemc/util/Files.java
+++ /dev/null
@@ -1,35 +0,0 @@
-package org.bxteam.divinemc.util;
-
-import java.io.File;
-import java.io.IOException;
-
-public final class Files {
-    public static void deleteRecursively(File dir) throws IOException {
-        if (dir == null || !dir.isDirectory()) {
-            return;
-        }
-
-        try {
-            File[] files = dir.listFiles();
-            if (files == null) {
-                throw new IOException("Error enumerating directory during recursive delete operation: " + dir.getAbsolutePath());
-            }
-
-            for (File child : files) {
-                if (child.isDirectory()) {
-                    Files.deleteRecursively(child);
-                } else if (child.isFile()) {
-                    if (!child.delete()) {
-                        throw new IOException("Error deleting file during recursive delete operation: " + child.getAbsolutePath());
-                    }
-                }
-            }
-
-            if (!dir.delete()) {
-                throw new IOException("Error deleting directory during recursive delete operation: " + dir.getAbsolutePath());
-            }
-        } catch (SecurityException ex) {
-            throw new IOException("Security error during recursive delete operation", ex);
-        }
-    }
-}
diff --git a/divinemc-server/src/main/java/org/bxteam/divinemc/util/MemoryUtil.java b/divinemc-server/src/main/java/org/bxteam/divinemc/util/MemoryUtil.java
deleted file mode 100644
index 1c84493..0000000
--- a/divinemc-server/src/main/java/org/bxteam/divinemc/util/MemoryUtil.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package org.bxteam.divinemc.util;
-
-public final class MemoryUtil {
-    public static int[] byte2int(byte[] data) {
-        if (data == null) return null;
-        int[] ints = new int[data.length];
-        for (int i = 0; i < data.length; i++) {
-            ints[i] = data[i] & 0xff;
-        }
-        return ints;
-    }
-}
diff --git a/gradle.properties b/gradle.properties
index 4b9a728..324140c 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,7 +2,7 @@ group = org.bxteam.divinemc
 version=1.21.4-R0.1-SNAPSHOT
 
 mcVersion=1.21.4
-purpurRef=9249a2ca463587eb4074e15f77e926ffa0d6424d
+purpurRef=65b1288b31c06a68e62a6d7b70140c3fb8f88b8b
 experimental=false
 
 org.gradle.configuration-cache=true