diff --git a/DotBook.Tests/DotBook.Tests.csproj b/DotBook.Tests/DotBook.Tests.csproj
index 9d2cb6d..202ad77 100644
--- a/DotBook.Tests/DotBook.Tests.csproj
+++ b/DotBook.Tests/DotBook.Tests.csproj
@@ -11,7 +11,7 @@
     <PackageReference Include="xunit" Version="2.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
     <PackageReference Include="Microsoft.CodeAnalysis" Version="2.4.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
   </ItemGroup>
 
diff --git a/DotBook/DotBook.csproj b/DotBook/DotBook.csproj
index 0c2303a..3fb2a49 100644
--- a/DotBook/DotBook.csproj
+++ b/DotBook/DotBook.csproj
@@ -18,6 +18,6 @@
   <ItemGroup>
     <PackageReference Include="Colorful.Console" Version="1.2.1" />
     <PackageReference Include="Microsoft.CodeAnalysis" Version="2.4.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 </Project>