diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 4751e96f2..f1fdef87b 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -96,9 +96,9 @@
     </Dependency>
     <!-- This is so that WCF packages are included in the final drop for official releases. -->
     <!-- Replace with better solution, see https://github.com/dotnet/arcade/issues/4162 -->
-    <Dependency Name="System.ServiceModel.Primitives" Version="4.7.0-rtm.20180.2">
+    <Dependency Name="System.ServiceModel.Primitives" Version="4.7.0-rtm.20181.1">
       <Uri>https://github.com/dotnet/wcf</Uri>
-      <Sha>2df026b433c01867acda77e3a902f84796548670</Sha>
+      <Sha>a0c3917deaeb4761a5cf28115c74593031354417</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>