diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index c608cca536..e5148795f4 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -254,6 +254,7 @@ public static class FeatureFlagKeys
     public const string MigrateMyVaultToMyItems = "pm-20558-migrate-myvault-to-myitems";
     public const string PM27632_CipherCrudOperationsToSdk = "pm-27632-cipher-crud-operations-to-sdk";
     public const string PM30521_AutofillButtonViewLoginScreen = "pm-30521-autofill-button-view-login-screen";
+    public const string PM29438_WelcomeDialogWithExtensionPrompt = "pm-29438-welcome-dialog-with-extension-prompt";
 
     /* Innovation Team */
     public const string ArchiveVaultItems = "pm-19148-innovation-archive";