diff --git a/MatterControlLib/MatterControlLib.csproj b/MatterControlLib/MatterControlLib.csproj
index da5c43821..25f165697 100644
--- a/MatterControlLib/MatterControlLib.csproj
+++ b/MatterControlLib/MatterControlLib.csproj
@@ -95,7 +95,7 @@
     <PackageReference Include="MIConvexHull" Version="1.1.19.1019" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="5.0.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
     <PackageReference Include="Zeroconf" Version="3.4.2" />
diff --git a/MatterHackers.gsSlicer/MatterControl.gsSlicer.csproj b/MatterHackers.gsSlicer/MatterControl.gsSlicer.csproj
index 48efce996..6012b8228 100644
--- a/MatterHackers.gsSlicer/MatterControl.gsSlicer.csproj
+++ b/MatterHackers.gsSlicer/MatterControl.gsSlicer.csproj
@@ -15,7 +15,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Submodules/MatterSlice b/Submodules/MatterSlice
index 85f4e4092..a5725d2dc 160000
--- a/Submodules/MatterSlice
+++ b/Submodules/MatterSlice
@@ -1 +1 @@
-Subproject commit 85f4e4092fcc06de264f8345a50bf3115249a07f
+Subproject commit a5725d2dc145c449153cb36a63122fcf400743c3
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index f7c4ca445..72b1d66ec 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit f7c4ca4457b4552ee61d95913f65675351e19c4b
+Subproject commit 72b1d66ecf66f9a859533d6b0f6ef9cec48c145c
diff --git a/Tests/MatterControl.AutomationTests/MatterControl.AutomationTests.csproj b/Tests/MatterControl.AutomationTests/MatterControl.AutomationTests.csproj
index f0948f0a1..e78e8fe6e 100644
--- a/Tests/MatterControl.AutomationTests/MatterControl.AutomationTests.csproj
+++ b/Tests/MatterControl.AutomationTests/MatterControl.AutomationTests.csproj
@@ -41,7 +41,7 @@
     <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     <PackageReference Include="NUnit" Version="3.11.0" />
     <PackageReference Include="NUnit.ApplicationDomain" Version="11.1.0" />
     <PackageReference Include="NUnit3TestAdapter">
diff --git a/Tests/MatterControl.Tests/MatterControl.Tests.csproj b/Tests/MatterControl.Tests/MatterControl.Tests.csproj
index 7fdd00a81..65b9961db 100644
--- a/Tests/MatterControl.Tests/MatterControl.Tests.csproj
+++ b/Tests/MatterControl.Tests/MatterControl.Tests.csproj
@@ -161,7 +161,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="C5" Version="2.5.3" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     <PackageReference Include="NUnit" Version="3.11.0" />
     <PackageReference Include="NUnit.ApplicationDomain" Version="11.1.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.12.0" />