diff --git a/BoletoFacilSDK.Tests/BoletoFacilSDK.Tests.Mac.csproj b/BoletoFacilSDK.Tests/BoletoFacilSDK.Tests.Mac.csproj
old mode 100755
new mode 100644
index a7efdc5..a31efb6
--- a/BoletoFacilSDK.Tests/BoletoFacilSDK.Tests.Mac.csproj
+++ b/BoletoFacilSDK.Tests/BoletoFacilSDK.Tests.Mac.csproj
@@ -10,7 +10,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0-preview-20170628-02" />
     <PackageReference Include="MSTest.TestAdapter" Version="1.1.18" />
     <PackageReference Include="MSTest.TestFramework" Version="1.1.18" />
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="Moq" Version="4.7.145" />
     <PackageReference Include="System.Net.Http" Version="4.3.3" />
   </ItemGroup>
diff --git a/BoletoFacilSDK.Tests/packages.config b/BoletoFacilSDK.Tests/packages.config
old mode 100755
new mode 100644
index a6911b0..638f400
--- a/BoletoFacilSDK.Tests/packages.config
+++ b/BoletoFacilSDK.Tests/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net461" />
 </packages>
\ No newline at end of file