diff --git a/src/ActuarialIntelligence.Calculators/packages.config b/src/ActuarialIntelligence.Calculators/packages.config
index 3df0f87..e04216e 100644
--- a/src/ActuarialIntelligence.Calculators/packages.config
+++ b/src/ActuarialIntelligence.Calculators/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net461" />
   <package id="Ronz.Core" version="17.9.17.4" targetFramework="net461" />
   <package id="Ronz.GSDLL32" version="9.23.1" targetFramework="net461" />
   <package id="Ronz.Pdf" version="17.9.21.1" targetFramework="net461" />