diff --git a/Source/Samples/Sample/TK.CustomMap.Sample.iOS/packages.config b/Source/Samples/Sample/TK.CustomMap.Sample.iOS/packages.config
old mode 100755
new mode 100644
index 390067d..72e2e5c
--- a/Source/Samples/Sample/TK.CustomMap.Sample.iOS/packages.config
+++ b/Source/Samples/Sample/TK.CustomMap.Sample.iOS/packages.config
@@ -4,7 +4,7 @@
   <package id="Microsoft.NETCore.Platforms" version="2.0.1" targetFramework="xamarinios10" />
   <package id="Microsoft.Win32.Primitives" version="4.3.0" targetFramework="xamarinios10" />
   <package id="NETStandard.Library" version="2.0.3" targetFramework="xamarinios10" />
-  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="xamarinios10" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="xamarinios10" />
   <package id="System.AppContext" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Collections" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Collections.Concurrent" version="4.3.0" targetFramework="xamarinios10" />
diff --git a/Source/Samples/Sample/TK.CustomMap.Sample/TK.CustomMap.Sample.csproj b/Source/Samples/Sample/TK.CustomMap.Sample/TK.CustomMap.Sample.csproj
index 6f72b9b..670abaf 100644
--- a/Source/Samples/Sample/TK.CustomMap.Sample/TK.CustomMap.Sample.csproj
+++ b/Source/Samples/Sample/TK.CustomMap.Sample/TK.CustomMap.Sample.csproj
@@ -10,7 +10,7 @@
     <None Remove="project.lock.json" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Xamarin.Forms" Version="4.0.0.709238" />
   </ItemGroup>
   <ItemGroup>
diff --git a/Source/TK.CustomMap/TK.CustomMap.csproj b/Source/TK.CustomMap/TK.CustomMap.csproj
old mode 100755
new mode 100644
index 6785df2..96a0f3a
--- a/Source/TK.CustomMap/TK.CustomMap.csproj
+++ b/Source/TK.CustomMap/TK.CustomMap.csproj
@@ -23,7 +23,7 @@
     <None Remove="TK.CustomMap.nuget.targets" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Xamarin.Forms" Version="4.0.0.709238" />
   </ItemGroup>
   <ProjectExtensions><VisualStudio><UserProperties XamarinHotReloadXFormsNugetUpgradeInfoBarTKCustomMapHideInfoBar="True" /></VisualStudio></ProjectExtensions>