diff --git a/evaluator/build.gradle b/evaluator/build.gradle
index 03f6bfb..9d52aac 100644
--- a/evaluator/build.gradle
+++ b/evaluator/build.gradle
@@ -19,6 +19,6 @@ repositories {
 dependencies {
     compileOnly project(':evaluator-api')
     compileOnly fileTree("libs")
-    implementation 'io.github.slimjar:slimjar:1.2.3'
+    implementation 'io.github.slimjar:slimjar:1.2.6'
     testImplementation group: 'junit', name: 'junit', version: '4.12'
 }
diff --git a/evaluator/libs/nashorn-core-15.1.jar b/evaluator/libs/nashorn-core-15.1.jar
deleted file mode 100644
index cc1517f..0000000
Binary files a/evaluator/libs/nashorn-core-15.1.jar and /dev/null differ
diff --git a/evaluator/libs/nashorn-core-15.3.jar b/evaluator/libs/nashorn-core-15.3.jar
new file mode 100644
index 0000000..a33cd5a
Binary files /dev/null and b/evaluator/libs/nashorn-core-15.3.jar differ
diff --git a/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/NashornScriptEvaluatorFactory.java b/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/NashornScriptEvaluatorFactory.java
index 5bfeeb4..e1231b3 100644
--- a/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/NashornScriptEvaluatorFactory.java
+++ b/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/NashornScriptEvaluatorFactory.java
@@ -12,7 +12,7 @@ import java.util.Map;
 
 public final class NashornScriptEvaluatorFactory implements ScriptEvaluatorFactory {
     public static final Collection<String> LIBRARIES = Arrays.asList(
-            "nashorn-core-15.1.isolated-jar",
+            "nashorn-core-15.3.isolated-jar",
             "asm-commons-9.2.isolated-jar",
             "asm-util-9.2.isolated-jar",
             "asm-9.2.isolated-jar"
diff --git a/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/QuickJsScriptEvaluatorFactory.java b/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/QuickJsScriptEvaluatorFactory.java
index ad90784..8e67226 100644
--- a/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/QuickJsScriptEvaluatorFactory.java
+++ b/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/QuickJsScriptEvaluatorFactory.java
@@ -1,8 +1,6 @@
 package com.extendedclip.papi.expansion.javascript.evaluator;
 
 import com.extendedclip.papi.expansion.javascript.evaluator.util.InjectionUtil;
-import io.github.slimjar.injector.loader.Injectable;
-import io.github.slimjar.injector.loader.InjectableFactory;
 
 import javax.script.ScriptException;
 import java.io.File;
diff --git a/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/util/InjectionUtil.java b/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/util/InjectionUtil.java
index bd7a3b6..e94bb82 100644
--- a/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/util/InjectionUtil.java
+++ b/evaluator/src/main/java/com/extendedclip/papi/expansion/javascript/evaluator/util/InjectionUtil.java
@@ -4,6 +4,8 @@ import com.extendedclip.papi.expansion.javascript.evaluator.LibraryInjectionExce
 import com.extendedclip.papi.expansion.javascript.evaluator.QuickJsScriptEvaluatorFactory;
 import io.github.slimjar.injector.loader.Injectable;
 import io.github.slimjar.injector.loader.InjectableFactory;
+import io.github.slimjar.resolver.data.Repository;
+import io.github.slimjar.resolver.mirrors.SimpleMirrorSelector;
 
 import java.io.File;
 import java.io.IOException;
@@ -18,6 +20,7 @@ import java.nio.file.StandardOpenOption;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 import java.util.jar.JarFile;
 import java.util.zip.ZipEntry;
@@ -42,9 +45,18 @@ public final class InjectionUtil {
 
     public static void inject(final Collection<String> libraries) throws LibraryInjectionException {
         try {
-            final Collection<URL> libraryURLs = extractLibraries(libraries);
+            final File selfFile = new File(SELF_JAR_URL.toURI());
+            final File libsFolder = getLibsFolder(selfFile);
+
+            final Collection<URL> libraryURLs = extractLibraries(selfFile, libsFolder, libraries);
             final ClassLoader bukkitClassLoader = InjectionUtil.class.getClassLoader().getParent();
-            final Injectable injectable = InjectableFactory.create(bukkitClassLoader);
+            final Injectable injectable = InjectableFactory.create(
+                    libsFolder.toPath(),
+                    //Collections.singletonList(new Repository(new URL(SimpleMirrorSelector.CENTRAL_URL))),
+                    Collections.emptyList(),
+                    bukkitClassLoader
+            );
+
             for (final URL libraryURL : libraryURLs) {
                 injectable.inject(libraryURL);
             }
@@ -53,12 +65,12 @@ public final class InjectionUtil {
         }
     }
 
-    private static Collection<URL> extractLibraries(final Collection<String> libraries) throws IOException, URISyntaxException, NoSuchAlgorithmException, ReflectiveOperationException {
+    private static Collection<URL> extractLibraries(final File selfFile, final File libsFolder, final Collection<String> libraries) throws IOException, URISyntaxException, NoSuchAlgorithmException, ReflectiveOperationException {
         final Collection<URL> extracted = new ArrayList<>();
-        final File selfFile = new File(SELF_JAR_URL.toURI());
         final JarFile jarFile = new JarFile(selfFile);
+
         for (final String library : libraries) {
-            final File extractedFile = getExtractionFile(library, selfFile);
+            final File extractedFile = getExtractionFile(library, libsFolder);
             if (extractedFile.exists()) {
                 extracted.add(extractedFile.toURI().toURL());
                 continue;
@@ -72,8 +84,8 @@ public final class InjectionUtil {
             //noinspection ResultOfMethodCallIgnored
             extractedFile.createNewFile();
             try (final InputStream stream = jarFile.getInputStream(entry);
-                final ReadableByteChannel inChannel = Channels.newChannel(stream);
-                final FileChannel outChannel = FileChannel.open(extractedFile.toPath(), StandardOpenOption.CREATE, StandardOpenOption.WRITE)) {
+                 final ReadableByteChannel inChannel = Channels.newChannel(stream);
+                 final FileChannel outChannel = FileChannel.open(extractedFile.toPath(), StandardOpenOption.CREATE, StandardOpenOption.WRITE)) {
                 outChannel.transferFrom(inChannel, 0, entry.getSize());
             }
             extracted.add(extractedFile.toURI().toURL());
@@ -81,7 +93,11 @@ public final class InjectionUtil {
         return extracted;
     }
 
-    private static File getExtractionFile(final String name, final File selfFile) {
-        return new File(selfFile.getParentFile(), "libraries/" + name.replace("isolated-jar", "jar"));
+    private static File getExtractionFile(final String name, final File libsFolder) {
+        return new File(libsFolder, name.replace("isolated-jar", "jar"));
+    }
+
+    private static File getLibsFolder(final File selfFile) {
+        return new File(selfFile.getParentFile(), "libraries");
     }
 }