diff --git a/mwp-ver.txt b/mwp-ver.txt
index e72e31a..3bf5a3b 100644
--- a/mwp-ver.txt
+++ b/mwp-ver.txt
@@ -1 +1 @@
-2.9.3.0
\ No newline at end of file
+2.9.4.0
\ No newline at end of file
diff --git a/mwp.exe b/mwp.exe
index cfc98fb..4ad628e 100644
Binary files a/mwp.exe and b/mwp.exe differ
diff --git a/src/MalwarePatch/Assets/certificate-map.json b/src/MalwarePatch/Assets/certificate-map.json
index a0e9fcc..3b09de9 100644
--- a/src/MalwarePatch/Assets/certificate-map.json
+++ b/src/MalwarePatch/Assets/certificate-map.json
@@ -61,7 +61,8 @@
     "grid verse (format factory) 256.cer",
     "grid verse (format factory) 2018.12.cer",
     "grid verse (format factory) 2020.02.cer",
-    "grid verse (format factory) 256.2020.02.cer"
+    "grid verse (format factory) 256.2020.02.cer",
+    "grid verse (format factory) 256.2020.08.cer"
   ],
   "HeiNote": [
     "7654 note.cer",
diff --git a/src/MalwarePatch/Assets/malware-remote-info.json b/src/MalwarePatch/Assets/malware-remote-info.json
index a282d14..19d16c3 100644
--- a/src/MalwarePatch/Assets/malware-remote-info.json
+++ b/src/MalwarePatch/Assets/malware-remote-info.json
@@ -98,7 +98,7 @@
       },
       {
         "url": "https://www.liebao.cn/",
-        "regex": "href=\"(http[s]?://dl.liebao.cn/kb/KSbrowser.*?)\"",
+        "regex": "href=\"(http[s]?://dl.liebao.cn/.*KSbrowser.*\.exe)\"",
         "group": 1
       },
       {
diff --git a/src/MalwarePatch/Certificates/grid verse (format factory) 256.2020.08.cer b/src/MalwarePatch/Certificates/grid verse (format factory) 256.2020.08.cer
new file mode 100644
index 0000000..41d30ab
Binary files /dev/null and b/src/MalwarePatch/Certificates/grid verse (format factory) 256.2020.08.cer differ
diff --git a/src/MalwarePatch/CliTools/MalwareChecker.cs b/src/MalwarePatch/CliTools/MalwareChecker.cs
index c1f0540..7ed7a42 100644
--- a/src/MalwarePatch/CliTools/MalwareChecker.cs
+++ b/src/MalwarePatch/CliTools/MalwareChecker.cs
@@ -26,7 +26,7 @@ public MalwareCheckException() : base() { }
     class MalwareChecker
     {
         private const string InfoPath = @"assets/malware-remote-info.json";
-        private const string UserAgent = @"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36";
+        private const string UserAgent = @"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36";
         private readonly JsonObject infoObject;
         private readonly StringBuilder stringBuilder = new StringBuilder();
         private readonly bool clean = false;
diff --git a/src/MalwarePatch/Properties/AssemblyInfo.cs b/src/MalwarePatch/Properties/AssemblyInfo.cs
index 77d0bd8..875b0ec 100644
--- a/src/MalwarePatch/Properties/AssemblyInfo.cs
+++ b/src/MalwarePatch/Properties/AssemblyInfo.cs
@@ -51,5 +51,5 @@
 // 可以指定所有值，也可以使用以下所示的 "*" 预置版本号和修订号
 // 方法是按如下所示使用“*”: :
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2.9.3.0")]
-[assembly: AssemblyFileVersion("2.9.3.0")]
+[assembly: AssemblyVersion("2.9.4.0")]
+[assembly: AssemblyFileVersion("2.9.4.0")]