diff --git a/Octokit.Reactive/Octokit.Reactive-Mono.csproj b/Octokit.Reactive/Octokit.Reactive-Mono.csproj
index 9f698549..f4fd5eb4 100644
--- a/Octokit.Reactive/Octokit.Reactive-Mono.csproj
+++ b/Octokit.Reactive/Octokit.Reactive-Mono.csproj
@@ -132,6 +132,7 @@
     <Compile Include="Clients\IObservableIssuesLabelsClient.cs" />
     <Compile Include="Clients\IObservableTeamsClient.cs" />
     <Compile Include="Clients\ObservableTeamsClient.cs" />
+    <Compile Include="Clients\ObservableIssuesLabelsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
diff --git a/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj b/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj
index bdeccbbb..9b29b1f2 100644
--- a/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj
+++ b/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj
@@ -141,6 +141,7 @@
     <Compile Include="Clients\IObservableIssuesLabelsClient.cs" />
     <Compile Include="Clients\IObservableTeamsClient.cs" />
     <Compile Include="Clients\ObservableTeamsClient.cs" />
+    <Compile Include="Clients\ObservableIssuesLabelsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Novell\Novell.MonoDroid.CSharp.targets" />
   <ItemGroup>
diff --git a/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj b/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj
index ec58ad42..fa449b82 100644
--- a/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj
+++ b/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj
@@ -136,6 +136,7 @@
     <Compile Include="Clients\IObservableIssuesLabelsClient.cs" />
     <Compile Include="Clients\IObservableTeamsClient.cs" />
     <Compile Include="Clients\ObservableTeamsClient.cs" />
+    <Compile Include="Clients\ObservableIssuesLabelsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>