diff --git a/src/BioFSharp.Mz/BioFSharp.Mz.fsproj b/src/BioFSharp.Mz/BioFSharp.Mz.fsproj
index 972bf64..22d78e9 100644
--- a/src/BioFSharp.Mz/BioFSharp.Mz.fsproj
+++ b/src/BioFSharp.Mz/BioFSharp.Mz.fsproj
@@ -61,7 +61,7 @@
     <PackageReference Include="FSharp.Stats" Version="0.4.0" />
     <PackageReference Include="FSharpAux" Version="1.0.0" />
     <PackageReference Include="FSharpAux.IO" Version="1.0.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.Data.SQLite.Core" Version="1.0.113.6" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All"/>
   </ItemGroup>