diff --git a/ResourceDirectory/packages.config b/ResourceDirectory/packages.config
index da2df3a..55a6741 100644
--- a/ResourceDirectory/packages.config
+++ b/ResourceDirectory/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="Microsoft.NETCore.Platforms" version="1.1.0" targetFramework="net45" />
   <package id="NETStandard.Library" version="1.6.1" targetFramework="net45" />
-  <package id="PeterO.Cbor" version="4.0.0" targetFramework="net462" />
+  <package id="PeterO.Cbor" version="4.5.1" targetFramework="net462" />
   <package id="PeterO.Numbers" version="1.0.2" targetFramework="net462" />
   <package id="System.Collections" version="4.3.0" targetFramework="net45" />
   <package id="System.Collections.Concurrent" version="4.3.0" targetFramework="net45" />