diff --git a/src/Marvin.JsonPatch/Marvin.JsonPatch.csproj b/src/Marvin.JsonPatch/Marvin.JsonPatch.csproj
index 99bde7d..3259fef 100644
--- a/src/Marvin.JsonPatch/Marvin.JsonPatch.csproj
+++ b/src/Marvin.JsonPatch/Marvin.JsonPatch.csproj
@@ -29,7 +29,7 @@ Have a look at the project site for the current status of this package and to le
     <DebugType>pdbonly</DebugType>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup>
     <Compile Update="Properties\Resources.Designer.cs">
diff --git a/tests/Marvin.JsonPatch.XUnitTest/Marvin.JsonPatch.XUnitTest.csproj b/tests/Marvin.JsonPatch.XUnitTest/Marvin.JsonPatch.XUnitTest.csproj
index c0ad1cc..a307ccd 100644
--- a/tests/Marvin.JsonPatch.XUnitTest/Marvin.JsonPatch.XUnitTest.csproj
+++ b/tests/Marvin.JsonPatch.XUnitTest/Marvin.JsonPatch.XUnitTest.csproj
@@ -8,7 +8,7 @@
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" /> 
   </ItemGroup>