diff --git a/util/src/main/java/dev/openrs2/util/io/DeterministicJarOutputStream.java b/util/src/main/java/dev/openrs2/util/io/DeterministicJarOutputStream.java
deleted file mode 100644
index 118bb28b..00000000
--- a/util/src/main/java/dev/openrs2/util/io/DeterministicJarOutputStream.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package dev.openrs2.util.io;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.nio.file.attribute.FileTime;
-import java.util.jar.JarOutputStream;
-import java.util.jar.Manifest;
-import java.util.zip.ZipEntry;
-
-public final class DeterministicJarOutputStream extends JarOutputStream {
-	private static final FileTime UNIX_EPOCH = FileTime.fromMillis(0);
-
-	public DeterministicJarOutputStream(OutputStream out) throws IOException {
-		super(out);
-	}
-
-	public DeterministicJarOutputStream(OutputStream out, Manifest man) throws IOException {
-		super(out, man);
-	}
-
-	@Override
-	public void putNextEntry(ZipEntry ze) throws IOException {
-		ze.setCreationTime(UNIX_EPOCH);
-		ze.setLastAccessTime(UNIX_EPOCH);
-		ze.setLastModifiedTime(UNIX_EPOCH);
-		super.putNextEntry(ze);
-	}
-}
diff --git a/util/src/main/java/dev/openrs2/util/io/DeterministicJarOutputStream.kt b/util/src/main/java/dev/openrs2/util/io/DeterministicJarOutputStream.kt
new file mode 100644
index 00000000..ce2e0bc7
--- /dev/null
+++ b/util/src/main/java/dev/openrs2/util/io/DeterministicJarOutputStream.kt
@@ -0,0 +1,23 @@
+package dev.openrs2.util.io
+
+import java.io.OutputStream
+import java.nio.file.attribute.FileTime
+import java.util.jar.JarOutputStream
+import java.util.jar.Manifest
+import java.util.zip.ZipEntry
+
+class DeterministicJarOutputStream : JarOutputStream {
+    constructor(out: OutputStream) : super(out)
+    constructor(out: OutputStream, man: Manifest) : super(out, man)
+
+    override fun putNextEntry(ze: ZipEntry) {
+        ze.creationTime = UNIX_EPOCH
+        ze.lastAccessTime = UNIX_EPOCH
+        ze.lastModifiedTime = UNIX_EPOCH
+        super.putNextEntry(ze)
+    }
+
+    companion object {
+        private val UNIX_EPOCH = FileTime.fromMillis(0)
+    }
+}