diff --git a/app/build.gradle b/app/build.gradle
index 5dab3ec..57db186 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,7 +8,7 @@ android {
 
     defaultConfig {
         applicationId "com.github.catvod.demo"
-        minSdk 21
+        minSdk 17
         targetSdk 33
     }
 
@@ -32,9 +32,9 @@ android {
 }
 
 dependencies {
-    implementation 'com.squareup.okhttp3:okhttp:4.10.0'
+    implementation 'com.squareup.okhttp3:okhttp:3.12.13'
     implementation 'com.google.code.gson:gson:2.9.1'
     implementation 'cn.wanghaomiao:JsoupXpath:2.5.1'
-    implementation 'com.google.zxing:core:3.5.0'
+    implementation 'com.google.zxing:core:3.3.0'
     implementation 'org.jsoup:jsoup:1.15.3'
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/github/catvod/bean/Result.java b/app/src/main/java/com/github/catvod/bean/Result.java
index 7f9eacb..e7f1828 100644
--- a/app/src/main/java/com/github/catvod/bean/Result.java
+++ b/app/src/main/java/com/github/catvod/bean/Result.java
@@ -4,7 +4,6 @@ import com.google.gson.Gson;
 import com.google.gson.annotations.SerializedName;
 import com.google.gson.reflect.TypeToken;
 
-import org.jetbrains.annotations.NotNull;
 import org.json.JSONObject;
 
 import java.lang.reflect.Type;
@@ -134,7 +133,6 @@ public class Result {
         return toString();
     }
 
-    @NotNull
     @Override
     public String toString() {
         return new Gson().toJson(this);
diff --git a/app/src/main/java/com/github/catvod/spider/Proxy.java b/app/src/main/java/com/github/catvod/spider/Proxy.java
index 43db924..9a3e016 100644
--- a/app/src/main/java/com/github/catvod/spider/Proxy.java
+++ b/app/src/main/java/com/github/catvod/spider/Proxy.java
@@ -5,7 +5,7 @@ import com.github.catvod.crawler.SpiderDebug;
 import com.github.catvod.net.OkHttpUtil;
 
 import java.io.ByteArrayInputStream;
-import java.nio.charset.StandardCharsets;
+import java.io.UnsupportedEncodingException;
 import java.util.Map;
 import java.util.Objects;
 
@@ -13,10 +13,10 @@ public class Proxy extends Spider {
 
     private static int port = -1;
 
-    public static Object[] proxy(Map<String, String> params) {
+    public static Object[] proxy(Map<String, String> params) throws UnsupportedEncodingException {
         switch (Objects.requireNonNull(params.get("do"))) {
             case "ck":
-                return new Object[]{200, "text/plain; charset=utf-8", new ByteArrayInputStream("ok".getBytes(StandardCharsets.UTF_8))};
+                return new Object[]{200, "text/plain; charset=utf-8", new ByteArrayInputStream("ok".getBytes("UTF-8"))};
             case "ali":
                 return Ali.vod(params);
             default:
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 1f178b4..9884556 100644
--- a/app/src/main/java/com/github/catvod/utils/Misc.java
+++ b/app/src/main/java/com/github/catvod/utils/Misc.java
@@ -15,10 +15,7 @@ import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.math.BigInteger;
-import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
@@ -130,10 +127,10 @@ public class Misc {
     }
 
     public static String MD5(String src) {
-        return MD5(src, StandardCharsets.UTF_8);
+        return MD5(src, "UTF-8");
     }
 
-    public static String MD5(String src, Charset charset) {
+    public static String MD5(String src, String charset) {
         try {
             MessageDigest md = MessageDigest.getInstance("MD5");
             byte[] messageDigest = md.digest(src.getBytes(charset));
@@ -141,7 +138,7 @@ public class Misc {
             StringBuilder sb = new StringBuilder(no.toString(16));
             while (sb.length() < 32) sb.insert(0, "0");
             return sb.toString().toLowerCase();
-        } catch (NoSuchAlgorithmException e) {
+        } catch (Exception e) {
             return "";
         }
     }
diff --git a/jar/custom_spider.jar b/jar/custom_spider.jar
index 6a6c24e..7b02def 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 120a4bb..3b7a01f 100644
--- a/jar/custom_spider.jar.md5
+++ b/jar/custom_spider.jar.md5
@@ -1 +1 @@
-940f5635d30de6ef9025c334afaf706b
+efc8d7ab428b7bb8459f6d5614388ee2