diff --git a/mzta-background.js b/mzta-background.js
index 830ad1ed..49763d55 100644
--- a/mzta-background.js
+++ b/mzta-background.js
@@ -20,7 +20,10 @@ import { mzta_script } from './js/mzta-chatgpt.js';
 import { prefs_default } from './options/mzta-options-default.js';
 import { mzta_Menus } from './js/mzta-menus.js';
 import { taLogger } from './js/mzta-logger.js';
-import { getCurrentIdentity, getOriginalBody, replaceBody, setBody, i18nConditionalGet, generateCallID } from './js/mzta-utils.js';
+import { getCurrentIdentity, getOriginalBody, replaceBody, setBody, i18nConditionalGet, generateCallID, migrateCustomPromptsStorage, migrateDefaultPromptsPropStorage } from './js/mzta-utils.js';
+
+await migrateCustomPromptsStorage();
+await migrateDefaultPromptsPropStorage();
 
 var original_html = '';
 var modified_html = '';