diff --git a/tests/FlatBuffers.Test/FlatBuffers.Core.Test.csproj b/tests/FlatBuffers.Test/FlatBuffers.Core.Test.csproj
index 5b6fb21af..a7697855d 100644
--- a/tests/FlatBuffers.Test/FlatBuffers.Core.Test.csproj
+++ b/tests/FlatBuffers.Test/FlatBuffers.Core.Test.csproj
@@ -191,7 +191,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>
diff --git a/tests/FlatBuffers.Test/packages.config b/tests/FlatBuffers.Test/packages.config
index d766d047c..1d41d8e68 100644
--- a/tests/FlatBuffers.Test/packages.config
+++ b/tests/FlatBuffers.Test/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net35" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net35" />
 </packages>
\ No newline at end of file