diff --git a/src/PhoneNumbers/PhoneNumbers.csproj b/src/PhoneNumbers/PhoneNumbers.csproj
index be7151fa..13243788 100644
--- a/src/PhoneNumbers/PhoneNumbers.csproj
+++ b/src/PhoneNumbers/PhoneNumbers.csproj
@@ -54,7 +54,7 @@
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="Microsoft.Bcl.HashCode" Version="1.1.1" />
-    <PackageReference Include="System.Memory" Version="4.5.5" />
+    <PackageReference Include="System.Memory" Version="4.6.0" />
   </ItemGroup>
 
   <ItemGroup>