diff --git a/References/MatterSlice/MSClipperLib/MSClipperLib.csproj b/References/MatterSlice/MSClipperLib/MSClipperLib.csproj
index ee1571e..d0b75e7 100644
--- a/References/MatterSlice/MSClipperLib/MSClipperLib.csproj
+++ b/References/MatterSlice/MSClipperLib/MSClipperLib.csproj
@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/References/MatterSlice/MatterSliceLib/MatterSliceLib.csproj b/References/MatterSlice/MatterSliceLib/MatterSliceLib.csproj
index e61f9b1..35c35e5 100644
--- a/References/MatterSlice/MatterSliceLib/MatterSliceLib.csproj
+++ b/References/MatterSlice/MatterSliceLib/MatterSliceLib.csproj
@@ -26,7 +26,7 @@
 
   <ItemGroup>
     <PackageReference Include="KdTree" Version="1.4.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/References/MatterSlice/Pathfinding/Pathfinding.csproj b/References/MatterSlice/Pathfinding/Pathfinding.csproj
index f56a58c..245fe8a 100644
--- a/References/MatterSlice/Pathfinding/Pathfinding.csproj
+++ b/References/MatterSlice/Pathfinding/Pathfinding.csproj
@@ -15,7 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="KdTree" Version="1.4.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/References/MatterSlice/QuadTree/QuadTree.csproj b/References/MatterSlice/QuadTree/QuadTree.csproj
index d60aaf6..2d53c82 100644
--- a/References/MatterSlice/QuadTree/QuadTree.csproj
+++ b/References/MatterSlice/QuadTree/QuadTree.csproj
@@ -15,7 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="KdTree" Version="1.4.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/References/agg-sharp/VectorMath/VectorMath.csproj b/References/agg-sharp/VectorMath/VectorMath.csproj
index cde30ee..ad10c0e 100644
--- a/References/agg-sharp/VectorMath/VectorMath.csproj
+++ b/References/agg-sharp/VectorMath/VectorMath.csproj
@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>
diff --git a/References/agg-sharp/agg/Agg.csproj b/References/agg-sharp/agg/Agg.csproj
index 54d4936..a0f661b 100644
--- a/References/agg-sharp/agg/Agg.csproj
+++ b/References/agg-sharp/agg/Agg.csproj
@@ -18,7 +18,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.Buffers" Version="4.5.0" />
   </ItemGroup>