diff --git a/core/src/main/java/org/lsposed/lspd/util/ClassPathURLStreamHandler.java b/core/src/main/java/org/lsposed/lspd/util/ClassPathURLStreamHandler.java
index edd54c5c..a1ccf8b4 100644
--- a/core/src/main/java/org/lsposed/lspd/util/ClassPathURLStreamHandler.java
+++ b/core/src/main/java/org/lsposed/lspd/util/ClassPathURLStreamHandler.java
@@ -14,16 +14,16 @@ import java.util.zip.ZipEntry;
 
 import sun.net.www.ParseUtil;
 
-public final class ClassPathURLStreamHandler extends Handler {
+final class ClassPathURLStreamHandler extends Handler {
     private final String fileUri;
     private final JarFile jarFile;
 
-    public ClassPathURLStreamHandler(String jarFileName) throws IOException {
+    ClassPathURLStreamHandler(String jarFileName) throws IOException {
         jarFile = new JarFile(jarFileName);
         fileUri = new File(jarFileName).toURI().toString();
     }
 
-    public URL getEntryUrlOrNull(String entryName) {
+    URL getEntryUrlOrNull(String entryName) {
         if (jarFile.getEntry(entryName) != null) {
             try {
                 String encodedName = ParseUtil.encodePath(entryName, false);
@@ -40,7 +40,12 @@ public final class ClassPathURLStreamHandler extends Handler {
         return new ClassPathURLConnection(url);
     }
 
-    private class ClassPathURLConnection extends JarURLConnection {
+    @Override
+    protected void finalize() throws Throwable {
+        jarFile.close();
+    }
+
+    private final class ClassPathURLConnection extends JarURLConnection {
         private JarFile connectionJarFile = null;
         private ZipEntry jarEntry = null;
         private InputStream jarInput = null;
@@ -48,6 +53,12 @@ public final class ClassPathURLStreamHandler extends Handler {
 
         private ClassPathURLConnection(URL url) throws MalformedURLException {
             super(url);
+            setUseCaches(false);
+        }
+
+        @Override
+        public void setUseCaches(boolean usecaches) {
+            super.setUseCaches(false);
         }
 
         @Override
diff --git a/core/src/main/java/org/lsposed/lspd/util/InMemoryDelegateLastClassLoader.java b/core/src/main/java/org/lsposed/lspd/util/InMemoryDelegateLastClassLoader.java
index a8485ec7..2870e753 100644
--- a/core/src/main/java/org/lsposed/lspd/util/InMemoryDelegateLastClassLoader.java
+++ b/core/src/main/java/org/lsposed/lspd/util/InMemoryDelegateLastClassLoader.java
@@ -8,6 +8,7 @@ import android.system.Os;
 import android.system.OsConstants;
 import android.util.Log;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.RequiresApi;
 
 import java.io.File;
@@ -16,6 +17,7 @@ import java.net.URL;
 import java.nio.ByteBuffer;
 import java.nio.channels.Channels;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Enumeration;
 import java.util.List;
@@ -164,6 +166,15 @@ public final class InMemoryDelegateLastClassLoader extends ByteBufferDexClassLoa
         return new CompoundEnumeration<>(resources);
     }
 
+    @NonNull
+    @Override
+    public String toString() {
+        return "LspModuleClassLoader[" +
+                "module=" + apk + "," +
+                "nativeLibraryDirs=" + Arrays.toString(nativeLibraryDirs.toArray()) + "," +
+                super.toString() + "]";
+    }
+
     public static InMemoryDelegateLastClassLoader loadApk(File apk,
                                                           String librarySearchPath,
                                                           ClassLoader parent) {