diff --git a/src/Microsoft.PowerShell.CoreCLR.Eventing/Microsoft.PowerShell.CoreCLR.Eventing.csproj b/src/Microsoft.PowerShell.CoreCLR.Eventing/Microsoft.PowerShell.CoreCLR.Eventing.csproj
index 19270a8f58..740e247029 100644
--- a/src/Microsoft.PowerShell.CoreCLR.Eventing/Microsoft.PowerShell.CoreCLR.Eventing.csproj
+++ b/src/Microsoft.PowerShell.CoreCLR.Eventing/Microsoft.PowerShell.CoreCLR.Eventing.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <!-- the following package(s) are from https://github.com/dotnet/corefx -->
-    <PackageReference Include="System.Security.Principal.Windows" Version="4.5.0" />
+    <PackageReference Include="System.Security.Principal.Windows" Version="4.5.1" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Microsoft.PowerShell.SDK/Microsoft.PowerShell.SDK.csproj b/src/Microsoft.PowerShell.SDK/Microsoft.PowerShell.SDK.csproj
index b8b0805ab4..ea3f7e187a 100644
--- a/src/Microsoft.PowerShell.SDK/Microsoft.PowerShell.SDK.csproj
+++ b/src/Microsoft.PowerShell.SDK/Microsoft.PowerShell.SDK.csproj
@@ -19,7 +19,7 @@
     <PackageReference Include="System.Data.SqlClient" Version="4.5.1" />
     <!-- the following package(s) are from https://github.com/dotnet/corefx -->
     <PackageReference Include="System.IO.Packaging" Version="4.5.0" />
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.5.0" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.5.1" />
     <PackageReference Include="System.Text.Encodings.Web" Version="4.5.0" />
     <PackageReference Include="System.Threading.AccessControl" Version="4.5.0" />
     <!-- the following package(s) are from https://github.com/dotnet/wcf -->
diff --git a/src/System.Management.Automation/System.Management.Automation.csproj b/src/System.Management.Automation/System.Management.Automation.csproj
index d6c23dbc28..b77e34dbc4 100644
--- a/src/System.Management.Automation/System.Management.Automation.csproj
+++ b/src/System.Management.Automation/System.Management.Automation.csproj
@@ -17,7 +17,7 @@
     <PackageReference Include="System.IO.FileSystem.AccessControl" Version="4.5.0" />
     <PackageReference Include="System.Management" Version="4.5.0" />
     <PackageReference Include="System.Security.AccessControl" Version="4.5.0" />
-    <PackageReference Include="System.Security.Cryptography.Pkcs" Version="4.5.0" />
+    <PackageReference Include="System.Security.Cryptography.Pkcs" Version="4.5.1" />
     <PackageReference Include="System.Security.Permissions" Version="4.5.0" />
     <PackageReference Include="System.Text.Encoding.CodePages" Version="4.5.0" />
     <!-- the following package(s) are from the powershell org -->