diff --git a/NewLife.IoT/NewLife.IoT.csproj b/NewLife.IoT/NewLife.IoT.csproj
index 745f56c..0f98830 100644
--- a/NewLife.IoT/NewLife.IoT.csproj
+++ b/NewLife.IoT/NewLife.IoT.csproj
@@ -50,7 +50,7 @@
     </PackageReference>
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)'!='net40'">
-    <PackageReference Include="NewLife.Core" Version="10.10.2024.0701" />
+    <PackageReference Include="NewLife.Core" Version="10.10.2024.710-beta0951" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)'=='net40'">
     <PackageReference Include="NewLife.Core" Version="10.10.2024.0701-net40" />
diff --git a/NewLife.IoT/TypeHelper.cs b/NewLife.IoT/TypeHelper.cs
index 7045675..22386f9 100644
--- a/NewLife.IoT/TypeHelper.cs
+++ b/NewLife.IoT/TypeHelper.cs
@@ -240,6 +240,7 @@ public static IDictionary<String, String> GetIoTTypes(Boolean full = false)
         }
     }
 
+#if NET40
     /// <summary>
     /// 指定类型是否数字类型。包括整数、小数、字节、字符等
     /// </summary>
@@ -262,4 +263,5 @@ public static Boolean IsNumber(this Type type)
             _ => false,
         };
     }
+#endif
 }
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