diff --git a/src/Microsoft.DotNet.Wpf/src/System.Windows.Input.Manipulations/System.Windows.Input.Manipulations.csproj b/src/Microsoft.DotNet.Wpf/src/System.Windows.Input.Manipulations/System.Windows.Input.Manipulations.csproj
index fefa5242322..f7fc1f1a610 100644
--- a/src/Microsoft.DotNet.Wpf/src/System.Windows.Input.Manipulations/System.Windows.Input.Manipulations.csproj
+++ b/src/Microsoft.DotNet.Wpf/src/System.Windows.Input.Manipulations/System.Windows.Input.Manipulations.csproj
@@ -40,6 +40,7 @@
     <NetCoreReference Include="System.Collections" />
     <NetCoreReference Include="System.Diagnostics.Debug" />
     <NetCoreReference Include="System.Diagnostics.Tools" />
+    <NetCoreReference Include="System.Memory" />
     <NetCoreReference Include="System.Runtime" />
     <NetCoreReference Include="System.Runtime.Extensions" />
     <NetCoreReference Include="System.Resources.ResourceManager" />
diff --git a/src/Microsoft.DotNet.Wpf/src/UIAutomation/UIAutomationTypes/UIAutomationTypes.csproj b/src/Microsoft.DotNet.Wpf/src/UIAutomation/UIAutomationTypes/UIAutomationTypes.csproj
index f6fc49fef02..c0c8e52224a 100644
--- a/src/Microsoft.DotNet.Wpf/src/UIAutomation/UIAutomationTypes/UIAutomationTypes.csproj
+++ b/src/Microsoft.DotNet.Wpf/src/UIAutomation/UIAutomationTypes/UIAutomationTypes.csproj
@@ -94,6 +94,7 @@
     <NetCoreReference Include="netstandard" />
     <NetCoreReference Include="Microsoft.Win32.Primitives" />
     <NetCoreReference Include="System" />
+    <NetCoreReference Include="System.Memory" />
     <NetCoreReference Include="System.Runtime" />
     <NetCoreReference Include="System.Resources.ResourceManager" />
     <NetCoreReference Include="System.Runtime.InteropServices" />