diff --git a/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt b/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt
index 595443c9..7a0f3713 100644
--- a/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt
+++ b/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt
@@ -44,7 +44,7 @@ class Bundler @Inject constructor(publicKeyTransformer: PublicKeyTransformer) {
         val glClient = Library.readPack(input.resolve("runescape_gl.pack200"))
 
         // bundle libraries together into a common classpath
-        val runtime = ClassLoader.getSystemClassLoader()
+        val runtime = ClassLoader.getPlatformClassLoader()
         val classPath = ClassPath(
             runtime,
             dependencies = listOf(unpacker),
diff --git a/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt b/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt
index 0b7bdbab..9feb9fd3 100644
--- a/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt
+++ b/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt
@@ -88,7 +88,7 @@ class Deobfuscator(private val input: Path, private val output: Path) {
         glUnpacker.remap(create(glUnpacker, "unpacker_"))
 
         // bundle libraries together into a common classpath
-        val runtime = ClassLoader.getSystemClassLoader()
+        val runtime = ClassLoader.getPlatformClassLoader()
         val classPath = ClassPath(
             runtime,
             dependencies = emptyList(),