diff --git a/AlwaysEncryptedSample.Models/packages.config b/AlwaysEncryptedSample.Models/packages.config
index 11dee13..0a77a5b 100644
--- a/AlwaysEncryptedSample.Models/packages.config
+++ b/AlwaysEncryptedSample.Models/packages.config
@@ -8,7 +8,7 @@
   <package id="Microsoft.AspNet.Mvc" version="5.2.7" targetFramework="net461" />
   <package id="Microsoft.AspNet.Razor" version="3.2.7" targetFramework="net461" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.7" targetFramework="net461" />
-  <package id="Microsoft.Owin" version="4.0.1" targetFramework="net461" />
+  <package id="Microsoft.Owin" version="4.1.0" targetFramework="net461" />
   <package id="Microsoft.Owin.Security" version="4.0.1" targetFramework="net461" />
   <package id="Microsoft.Owin.Security.Cookies" version="4.0.1" targetFramework="net461" />
   <package id="Microsoft.Owin.Security.OAuth" version="4.0.1" targetFramework="net461" />
diff --git a/AlwaysEncryptedSample/packages.config b/AlwaysEncryptedSample/packages.config
index 8de9d77..f87800b 100644
--- a/AlwaysEncryptedSample/packages.config
+++ b/AlwaysEncryptedSample/packages.config
@@ -19,7 +19,7 @@
   <package id="Microsoft.AspNet.WebPages" version="3.2.7" targetFramework="net46" />
   <package id="Microsoft.jQuery.Unobtrusive.Ajax" version="3.2.6" targetFramework="net46" />
   <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.11" targetFramework="net46" />
-  <package id="Microsoft.Owin" version="4.0.1" targetFramework="net46" />
+  <package id="Microsoft.Owin" version="4.1.0" targetFramework="net46" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="4.0.1" targetFramework="net46" />
   <package id="Microsoft.Owin.Security" version="4.0.1" targetFramework="net46" />
   <package id="Microsoft.Owin.Security.Cookies" version="4.0.1" targetFramework="net46" />