diff --git a/app/src/main/java/io/legado/app/constant/AppConst.kt b/app/src/main/java/io/legado/app/constant/AppConst.kt
index cf37e2b10..10ffccd1f 100644
--- a/app/src/main/java/io/legado/app/constant/AppConst.kt
+++ b/app/src/main/java/io/legado/app/constant/AppConst.kt
@@ -20,7 +20,7 @@ object AppConst {
     const val UA_NAME = "User-Agent"
 
     val userAgent: String by lazy {
-        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36"
+        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36"
     }
 
     val SCRIPT_ENGINE: ScriptEngine by lazy {
diff --git a/app/src/main/java/io/legado/app/help/http/HttpHelper.kt b/app/src/main/java/io/legado/app/help/http/HttpHelper.kt
index 173a450c1..dd480fbf5 100644
--- a/app/src/main/java/io/legado/app/help/http/HttpHelper.kt
+++ b/app/src/main/java/io/legado/app/help/http/HttpHelper.kt
@@ -1,5 +1,6 @@
 package io.legado.app.help.http
 
+import io.legado.app.constant.AppConst
 import io.legado.app.help.http.api.HttpGetApi
 import io.legado.app.utils.NetworkUtils
 import kotlinx.coroutines.suspendCancellableCoroutine
@@ -94,6 +95,7 @@ object HttpHelper {
         return Interceptor { chain ->
             val request = chain.request()
                 .newBuilder()
+                .addHeader(AppConst.UA_NAME, AppConst.userAgent)
                 .addHeader("Keep-Alive", "300")
                 .addHeader("Connection", "Keep-Alive")
                 .addHeader("Cache-Control", "no-cache")