diff --git a/AzureKeyVaultEmulator.AcceptanceTests/AzureKeyVaultEmulator.AcceptanceTests.csproj b/AzureKeyVaultEmulator.AcceptanceTests/AzureKeyVaultEmulator.AcceptanceTests.csproj
index aa8a383..78303c3 100644
--- a/AzureKeyVaultEmulator.AcceptanceTests/AzureKeyVaultEmulator.AcceptanceTests.csproj
+++ b/AzureKeyVaultEmulator.AcceptanceTests/AzureKeyVaultEmulator.AcceptanceTests.csproj
@@ -9,7 +9,7 @@
     <ItemGroup>
         <PackageReference Include="Azure.Security.KeyVault.Keys" Version="4.3.0" />
         <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.3.0" />
-        <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="6.17.0" />
+        <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="6.21.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
         <PackageReference Include="xunit" Version="2.4.1" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">