diff --git a/src/background/index.mjs b/src/background/index.mjs
index d887be2..102c2ce 100644
--- a/src/background/index.mjs
+++ b/src/background/index.mjs
@@ -15,6 +15,7 @@ import {
   isUsingApiKey,
 } from '../config/index.mjs'
 import { isSafari } from '../utils/is-safari'
+import { isFirefox } from '../utils/is-firefox'
 
 const KEY_ACCESS_TOKEN = 'accessToken'
 const cache = new ExpiryMap(10 * 1000)
@@ -112,7 +113,7 @@ Browser.contextMenus.removeAll().then(() => {
     id: menuId + 'new',
     parentId: menuId,
     title: 'New Chat',
-    contexts: ['selection'],
+    contexts: [isFirefox() ? 'all' : 'selection'],
   })
   for (const index in defaultConfig.selectionTools) {
     const key = defaultConfig.selectionTools[index]
diff --git a/src/utils/index.mjs b/src/utils/index.mjs
index 5027d34..3884b7c 100644
--- a/src/utils/index.mjs
+++ b/src/utils/index.mjs
@@ -5,6 +5,7 @@ export * from './fetch-sse'
 export * from './get-conversation-pairs'
 export * from './get-possible-element-by-query-selector'
 export * from './init-session'
+export * from './is-firefox.mjs'
 export * from './is-mobile'
 export * from './is-safari'
 export * from './limited-fetch'
diff --git a/src/utils/is-firefox.mjs b/src/utils/is-firefox.mjs
new file mode 100644
index 0000000..cea42bc
--- /dev/null
+++ b/src/utils/is-firefox.mjs
@@ -0,0 +1,3 @@
+export function isFirefox() {
+  return navigator.userAgent.includes('Firefox')
+}