diff --git a/Pyro.Test/packages.config b/Pyro.Test/packages.config
index 986c1a7b..2fad3252 100644
--- a/Pyro.Test/packages.config
+++ b/Pyro.Test/packages.config
@@ -6,7 +6,7 @@
   <package id="Hl7.Fhir.Support" version="0.96.0" targetFramework="net46" />
   <package id="Hl7.FhirPath" version="0.96.0" targetFramework="net46" />
   <package id="Microsoft.IO.RecyclableMemoryStream" version="1.2.2" targetFramework="net46" />
-  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net46" />
+  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net46" />
   <package id="Microsoft.Owin.Host.HttpListener" version="4.0.0" targetFramework="net46" />
   <package id="Microsoft.Owin.Hosting" version="4.0.0" targetFramework="net46" />
   <package id="Moq" version="4.9.0" targetFramework="net46" />