diff --git a/ClearBank.Signing.Api/ClearBank.Signing.Api/ClearBank.Signing.Api.csproj b/ClearBank.Signing.Api/ClearBank.Signing.Api/ClearBank.Signing.Api.csproj
index 7c2db2a..3406a74 100644
--- a/ClearBank.Signing.Api/ClearBank.Signing.Api/ClearBank.Signing.Api.csproj
+++ b/ClearBank.Signing.Api/ClearBank.Signing.Api/ClearBank.Signing.Api.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.4" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.22" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="2.1.4" />
     <PackageReference Include="Portable.BouncyCastle" Version="1.8.5.2" />
   </ItemGroup>