diff --git a/src/RoyaleApi.Client/RoyaleApi.Client.csproj b/src/RoyaleApi.Client/RoyaleApi.Client.csproj
index 96c732b..6a122a8 100644
--- a/src/RoyaleApi.Client/RoyaleApi.Client.csproj
+++ b/src/RoyaleApi.Client/RoyaleApi.Client.csproj
@@ -37,6 +37,15 @@
     <AssemblySearchPaths Condition="'$(BaseFrameworkPathOverrideForMono)' != ''">$(FrameworkPathOverride)/Facades;$(AssemblySearchPaths)</AssemblySearchPaths>
   </PropertyGroup>
 
+  <ItemGroup>
+    <!-- When using 'dotnet build' to compile against Mono reference assemblies it seems necessary to add some explicit references to some facade DLLs  -->
+    <Reference Include="System.Runtime" Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND $(TargetFramework.StartsWith('net4'))" />
+    <Reference Include="System.IO" Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND $(TargetFramework.StartsWith('net4'))" />
+    <Reference Include="System.Net.Primitives" Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND $(TargetFramework.StartsWith('net4'))" />
+    <Reference Include="System.Threading.Tasks" Condition="'$(BaseFrameworkPathOverrideForMono)' != '' AND $(TargetFramework.StartsWith('net4'))" />
+  </ItemGroup>
+
+
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
     <PackageReference Include="System.Net.Http" Version="4.3.3" />