diff --git a/package.props b/package.props
index 9c03eb0..4703697 100644
--- a/package.props
+++ b/package.props
@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <Version>1.1.0</Version>
+    <Version>1.1.1</Version>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageProjectUrl>https://github.com/Varorbc/PaySharp</PackageProjectUrl>
     <Authors>Varorbc</Authors>
diff --git a/src/PaySharp.Unionpay/CertUtil.cs b/src/PaySharp.Unionpay/CertUtil.cs
index c449330..ae16571 100644
--- a/src/PaySharp.Unionpay/CertUtil.cs
+++ b/src/PaySharp.Unionpay/CertUtil.cs
@@ -25,7 +25,7 @@ namespace PaySharp.Unionpay
         private static X509Certificate _acpEncCer;
         private static X509Certificate _acpRootCer;
         private static X509Certificate _acpMiddleCer;
-        internal static bool IsTest { get; set; }
+        public static bool IsTest { get; set; }
 
         #endregion