diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index b588ad05b5..137bb41507 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -182,6 +182,7 @@ public static class FeatureFlagKeys
     public const string PM24996ImplementUpgradeFromFreeDialog = "pm-24996-implement-upgrade-from-free-dialog";
     public const string PM24032_NewNavigationPremiumUpgradeButton = "pm-24032-new-navigation-premium-upgrade-button";
     public const string PM23713_PremiumBadgeOpensNewPremiumUpgradeDialog = "pm-23713-premium-badge-opens-new-premium-upgrade-dialog";
+    public const string PremiumUpgradeNewDesign = "pm-24033-updat-premium-subscription-page";
 
     /* Key Management Team */
     public const string ReturnErrorOnExistingKeypair = "return-error-on-existing-keypair";