diff --git a/MatterControl.csproj b/MatterControl.csproj
index f2583953e..77581f70b 100644
--- a/MatterControl.csproj
+++ b/MatterControl.csproj
@@ -95,6 +95,10 @@
       <Project>{657dbc6d-c3ea-4398-a3fa-ddb73c14f71b}</Project>
       <Name>Agg</Name>
     </ProjectReference>
+    <ProjectReference Include="Submodules\agg-sharp\Glfw\GlfwProvider.csproj">
+      <Project>{4da97548-2588-4ac3-a21d-ba4fee6fe5e4}</Project>
+      <Name>GlfwProvider</Name>
+    </ProjectReference>
     <ProjectReference Include="Submodules\agg-sharp\Gui\Gui.csproj">
       <Project>{74F6BB6C-9D02-4512-A59A-21940E35C532}</Project>
       <Name>Gui</Name>
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index be1102ff3..06b771144 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit be1102ff3ec0a5410399dc7da38c625583763970
+Subproject commit 06b771144420832646332f5c1ecfb1750cf0af43