diff --git a/2015/cs/AdventOfCode/AdventOfCode.csproj b/2015/cs/AdventOfCode/AdventOfCode.csproj
index bf260c2..3209af4 100644
--- a/2015/cs/AdventOfCode/AdventOfCode.csproj
+++ b/2015/cs/AdventOfCode/AdventOfCode.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
 </Project>