diff --git a/README.md b/README.md
index aefe70d2..dd1c60a8 100644
--- a/README.md
+++ b/README.md
@@ -361,7 +361,7 @@ If you are implementing subscriptions to participate in Xero's App Store you wil
 
   <ItemGroup>
     <PackageReference Include="DotNetEnv" Version="2.1.1" />
-    <PackageReference Include="IdentityModel" Version="4.0.0" />
+    <PackageReference Include="Duende.IdentityModel" Version="7.0.0" />
     <PackageReference Include="Xero.NetStandard.OAuth2" Version="3.19.0" />
     <PackageReference Include="Xero.NetStandard.OAuth2Client" Version="1.5.0" />
   </ItemGroup>
diff --git a/Xero.NetStandard.OAuth2Client/Xero.NetStandard.OAuth2Client.csproj b/Xero.NetStandard.OAuth2Client/Xero.NetStandard.OAuth2Client.csproj
index 582dc6d4..3f55dedc 100644
--- a/Xero.NetStandard.OAuth2Client/Xero.NetStandard.OAuth2Client.csproj
+++ b/Xero.NetStandard.OAuth2Client/Xero.NetStandard.OAuth2Client.csproj
@@ -12,7 +12,7 @@
     <PackageTags>xero;api;sdk;oauth2;oauth2.0</PackageTags>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="IdentityModel" Version="7.0.0" />
+    <PackageReference Include="Duende.IdentityModel" Version="7.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.1.0" />
     <PackageReference Include="System.Net.Http.Json" Version="8.0.0" />
diff --git a/Xero.NetStandard.OAuth2Client/src/Client/XeroClient.cs b/Xero.NetStandard.OAuth2Client/src/Client/XeroClient.cs
index 36824eba..4c096fa4 100644
--- a/Xero.NetStandard.OAuth2Client/src/Client/XeroClient.cs
+++ b/Xero.NetStandard.OAuth2Client/src/Client/XeroClient.cs
@@ -5,7 +5,7 @@
 using System.Net.Http.Headers;
 using System.Security.Cryptography;
 using Xero.NetStandard.OAuth2.Models;
-using IdentityModel.Client;
+using Duende.IdentityModel.Client;
 using Newtonsoft.Json;
 using Xero.NetStandard.OAuth2.Config;
 using Xero.NetStandard.OAuth2.Token;