diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index da50bade..d1a34f82 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -88,7 +88,7 @@ class Backend {
         const callback = () => this.checkLastError(chrome.runtime.lastError);
         chrome.tabs.query({}, (tabs) => {
             for (const tab of tabs) {
-                chrome.tabs.sendMessage(tab.id, {action: 'optionsUpdate', params: {source}}, callback);
+                chrome.tabs.sendMessage(tab.id, {action: 'optionsUpdated', params: {source}}, callback);
             }
         });
     }
diff --git a/ext/bg/js/settings/main.js b/ext/bg/js/settings/main.js
index 1ba4a7ef..c6683427 100644
--- a/ext/bg/js/settings/main.js
+++ b/ext/bg/js/settings/main.js
@@ -242,7 +242,7 @@ async function settingsSaveOptions() {
     await apiOptionsSave(source);
 }
 
-async function onOptionsUpdate({source}) {
+async function onOptionsUpdated({source}) {
     const thisSource = await settingsGetSource();
     if (source === thisSource) { return; }
 
@@ -274,7 +274,7 @@ async function onReady() {
 
     storageInfoInitialize();
 
-    yomichan.on('optionsUpdate', onOptionsUpdate);
+    yomichan.on('optionsUpdated', onOptionsUpdated);
 }
 
 $(document).ready(() => onReady());
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index a620fb03..c3050514 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -56,7 +56,7 @@ class Frontend extends TextScanner {
             }
 
             yomichan.on('orphaned', () => this.onOrphaned());
-            yomichan.on('optionsUpdate', () => this.updateOptions());
+            yomichan.on('optionsUpdated', () => this.updateOptions());
             yomichan.on('zoomChanged', (e) => this.onZoomChanged(e));
             chrome.runtime.onMessage.addListener(this.onRuntimeMessage.bind(this));
 
diff --git a/ext/mixed/js/core.js b/ext/mixed/js/core.js
index c273bb87..2dd9cf40 100644
--- a/ext/mixed/js/core.js
+++ b/ext/mixed/js/core.js
@@ -248,7 +248,7 @@ const yomichan = (() => {
 
             this._messageHandlers = new Map([
                 ['getUrl', this._onMessageGetUrl.bind(this)],
-                ['optionsUpdate', this._onMessageOptionsUpdate.bind(this)],
+                ['optionsUpdated', this._onMessageOptionsUpdated.bind(this)],
                 ['zoomChanged', this._onMessageZoomChanged.bind(this)]
             ]);
 
@@ -276,8 +276,8 @@ const yomichan = (() => {
             return {url: window.location.href};
         }
 
-        _onMessageOptionsUpdate({source}) {
-            this.trigger('optionsUpdate', {source});
+        _onMessageOptionsUpdated({source}) {
+            this.trigger('optionsUpdated', {source});
         }
 
         _onMessageZoomChanged({oldZoomFactor, newZoomFactor}) {
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index 90b7aaf3..045ce906 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -52,7 +52,7 @@ class Display {
         const displayGeneratorPromise = this.displayGenerator.prepare();
         const updateOptionsPromise = this.updateOptions(options);
         await Promise.all([displayGeneratorPromise, updateOptionsPromise]);
-        yomichan.on('optionsUpdate', () => this.updateOptions(null));
+        yomichan.on('optionsUpdated', () => this.updateOptions(null));
     }
 
     onError(_error) {