diff --git a/app/src/main/java/com/github/catvod/spider/YiSo.java b/app/src/main/java/com/github/catvod/spider/YiSo.java
index 09a8557c..ea6ca286 100644
--- a/app/src/main/java/com/github/catvod/spider/YiSo.java
+++ b/app/src/main/java/com/github/catvod/spider/YiSo.java
@@ -1,6 +1,7 @@
 package com.github.catvod.spider;
 
 import android.content.Context;
+import android.os.Build;
 import android.os.SystemClock;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
@@ -38,10 +39,11 @@ public class YiSo extends Spider {
 
     @Override
     public String searchContent(String key, boolean quick) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return "";
         String url = "https://yiso.fun/api/search?name=" + URLEncoder.encode(key) + "&from=ali";
         Map<String, String> result = new HashMap<>();
         Misc.loadWebView(url, getWebViewClient(result));
-        while (!result.containsKey("json")) SystemClock.sleep(250);
+        while (!result.containsKey("json")) SystemClock.sleep(50);
         String json = JsonParser.parseString(Objects.requireNonNull(result.get("json"))).getAsJsonPrimitive().getAsString();
         return Result.string(Item.objectFrom(json).getData().getList());
     }
@@ -50,6 +52,7 @@ public class YiSo extends Spider {
         return new WebViewClient() {
             @Override
             public void onPageFinished(WebView view, String url) {
+                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return;
                 view.evaluateJavascript("document.getElementsByTagName('pre')[0].textContent", value -> {
                     if (!value.equals("null")) result.put("json", value);
                 });
diff --git a/app/src/main/java/com/github/catvod/utils/Misc.java b/app/src/main/java/com/github/catvod/utils/Misc.java
index 98845566..9af5ffe0 100644
--- a/app/src/main/java/com/github/catvod/utils/Misc.java
+++ b/app/src/main/java/com/github/catvod/utils/Misc.java
@@ -1,10 +1,12 @@
 package com.github.catvod.utils;
 
 import android.net.Uri;
+import android.os.Build;
 import android.util.DisplayMetrics;
 import android.util.TypedValue;
 import android.view.View;
 import android.view.ViewGroup;
+import android.webkit.ValueCallback;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 
@@ -151,6 +153,15 @@ public class Misc {
         return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getDisplayMetrics());
     }
 
+    public static void loadUrl(WebView webView, String script) {
+        loadUrl(webView, script, null);
+    }
+
+    public static void loadUrl(WebView webView, String script, ValueCallback<String> callback) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) webView.evaluateJavascript(script, callback);
+        else webView.loadUrl(script);
+    }
+
     public static void addView(View view, ViewGroup.LayoutParams params) {
         ViewGroup group = Init.getActivity().getWindow().getDecorView().findViewById(android.R.id.content);
         group.addView(view, params);
diff --git a/jar/custom_spider.jar b/jar/custom_spider.jar
index 7b02def0..dc6f35f0 100644
Binary files a/jar/custom_spider.jar and b/jar/custom_spider.jar differ
diff --git a/jar/custom_spider.jar.md5 b/jar/custom_spider.jar.md5
index 3b7a01f9..91bf1eb4 100644
--- a/jar/custom_spider.jar.md5
+++ b/jar/custom_spider.jar.md5
@@ -1 +1 @@
-efc8d7ab428b7bb8459f6d5614388ee2
+1d6994a4a39ca10ec37a3936e5cad909