diff --git a/StudentSelectClassLibrary/StudentSelectClassLibrary.csproj b/StudentSelectClassLibrary/StudentSelectClassLibrary.csproj
index 9d5d3d0..2ba11d6 100644
--- a/StudentSelectClassLibrary/StudentSelectClassLibrary.csproj
+++ b/StudentSelectClassLibrary/StudentSelectClassLibrary.csproj
@@ -7,7 +7,7 @@
   <ItemGroup>
     <PackageReference Include="cloudsu.util" Version="1.0.0" />
     <PackageReference Include="EPPlus.Core" Version="1.5.4" />
-    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.1.2" />
+    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.1.4" />
   </ItemGroup>
 
   <ItemGroup>