diff --git a/backend/ApiMastery/ApiMastery.Tests/ApiMastery.Tests.csproj b/backend/ApiMastery/ApiMastery.Tests/ApiMastery.Tests.csproj
index 399d212..d22f932 100644
--- a/backend/ApiMastery/ApiMastery.Tests/ApiMastery.Tests.csproj
+++ b/backend/ApiMastery/ApiMastery.Tests/ApiMastery.Tests.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.1" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.15" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
     <PackageReference Include="NSubstitute" Version="4.2.1" />
     <PackageReference Include="xunit" Version="2.4.0" />