diff --git a/Retail/Solution/Contoso Movies/Contoso.Apps.Common/packages.config b/Retail/Solution/Contoso Movies/Contoso.Apps.Common/packages.config
index 0a513f06..221a10a1 100644
--- a/Retail/Solution/Contoso Movies/Contoso.Apps.Common/packages.config	
+++ b/Retail/Solution/Contoso Movies/Contoso.Apps.Common/packages.config	
@@ -22,7 +22,7 @@
   <package id="System.Security.AccessControl" version="4.5.0" targetFramework="net472" />
   <package id="System.Security.Permissions" version="4.5.0" targetFramework="net472" />
   <package id="System.Security.Principal.Windows" version="4.5.0" targetFramework="net472" />
-  <package id="System.ServiceModel.Primitives" version="4.5.0" targetFramework="net472" />
+  <package id="System.ServiceModel.Primitives" version="4.5.3" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.1" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/Retail/Solution/Contoso Movies/Contoso.Apps.Movies.Data/packages.config b/Retail/Solution/Contoso Movies/Contoso.Apps.Movies.Data/packages.config
index 4b829ee3..d033fc7b 100644
--- a/Retail/Solution/Contoso Movies/Contoso.Apps.Movies.Data/packages.config	
+++ b/Retail/Solution/Contoso Movies/Contoso.Apps.Movies.Data/packages.config	
@@ -19,7 +19,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net472" />
   <package id="System.Security.Permissions" version="4.5.0" targetFramework="net472" />
   <package id="System.Security.Principal.Windows" version="4.5.0" targetFramework="net472" />
-  <package id="System.ServiceModel.Primitives" version="4.5.0" targetFramework="net472" />
+  <package id="System.ServiceModel.Primitives" version="4.5.3" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.1" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/Retail/Solution/Data Import/packages.config b/Retail/Solution/Data Import/packages.config
index 2995193f..93d5013d 100644
--- a/Retail/Solution/Data Import/packages.config	
+++ b/Retail/Solution/Data Import/packages.config	
@@ -18,7 +18,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net472" />
   <package id="System.Security.Permissions" version="4.5.0" targetFramework="net472" />
   <package id="System.Security.Principal.Windows" version="4.5.0" targetFramework="net472" />
-  <package id="System.ServiceModel.Primitives" version="4.5.0" targetFramework="net472" />
+  <package id="System.ServiceModel.Primitives" version="4.5.3" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.1" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/Retail/Solution/DataGenerator/packages.config b/Retail/Solution/DataGenerator/packages.config
index 2b5506a6..d96a0d20 100644
--- a/Retail/Solution/DataGenerator/packages.config
+++ b/Retail/Solution/DataGenerator/packages.config
@@ -19,7 +19,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net472" />
   <package id="System.Security.Permissions" version="4.5.0" targetFramework="net472" />
   <package id="System.Security.Principal.Windows" version="4.5.0" targetFramework="net472" />
-  <package id="System.ServiceModel.Primitives" version="4.5.0" targetFramework="net472" />
+  <package id="System.ServiceModel.Primitives" version="4.5.3" targetFramework="net472" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.1" targetFramework="net472" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net472" />
 </packages>
\ No newline at end of file