diff --git a/CSharpMath.Ios/CSharpMath.Ios.csproj b/CSharpMath.Ios/CSharpMath.Ios.csproj
index 47322bc7f..669cdc5f0 100644
--- a/CSharpMath.Ios/CSharpMath.Ios.csproj
+++ b/CSharpMath.Ios/CSharpMath.Ios.csproj
@@ -6,7 +6,7 @@
     <PackageTags>$(PackageTags) ios xamarin</PackageTags>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <ProjectReference Include="..\CSharpMath\CSharpMath.csproj" />
   </ItemGroup>
   <Import Project="..\CSharpMath.Apple\CSharpMath.Apple.projitems" Label="Shared" />