diff --git a/Directory.Packages.props b/Directory.Packages.props
index 8d259c7..e36a463 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -53,7 +53,7 @@
     <PackageVersion Include="System.ServiceModel.NetTcp" Version="6.1.0" />
     <PackageVersion Include="System.ServiceModel.Federation" Version="6.2.0" />
     <PackageVersion Include="CoreWCF.NetTcp" Version="1.5.1" />
-    <PackageVersion Include="CoreWCF.Primitives" Version="1.4.1" />
+    <PackageVersion Include="CoreWCF.Primitives" Version="1.5.1" />
     <PackageVersion Include="CoreWCF.ConfigurationManager" Version="1.5.1" />
     <PackageVersion Include="CoreWCF.Http" Version="1.4.1" />
     <PackageVersion Include="CoreWCF.WebHttp" Version="1.4.1" />