diff --git a/BookAppCore/BookAppCore.csproj b/BookAppCore/BookAppCore.csproj
index 4c72d55..098380d 100644
--- a/BookAppCore/BookAppCore.csproj
+++ b/BookAppCore/BookAppCore.csproj
@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.9" />
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.10.9" />
     <PackageReference Include="Microsoft.VisualStudio.Azure.Kubernetes.Tools.Targets" Version="1.1.0" />
   </ItemGroup>