diff --git a/4chan_x.user.js b/4chan_x.user.js
index 6e14267fa..a5ca8b019 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -200,6 +200,7 @@
     },
     updater: {
       checkbox: {
+        'Beep': [false, 'Beep on new post to completely read thread'],
         'Scrolling': [false, 'Scroll updated posts into view. Only enabled at bottom of page.'],
         'Scroll BG': [false, 'Scroll background tabs'],
         'Verbose': [true, 'Show countdown timer, new post count'],
@@ -3034,6 +3035,14 @@
       $.on(d, 'QRPostSuccessful', this.cb.post);
       return $.on(d, 'visibilitychange ovisibilitychange mozvisibilitychange webkitvisibilitychange', this.cb.visibility);
     },
+    /*
+      http://freesound.org/people/pierrecartoons1979/sounds/90112/
+      cc-by-nc-3.0
+    */
+
+    audio: $.el('audio', {
+      src: 'data:audio/wav;base64,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'
+    }),
     cb: {
       post: function() {
         if (!Conf['Auto Update This']) {
@@ -3150,6 +3159,9 @@
           Updater.count.className = count ? 'new' : null;
         }
         if (count) {
+          if (Conf['Beep'] && $.hidden() && (Unread.replies.length === 0)) {
+            Updater.audio.play();
+          }
           Updater.unsuccessfulFetchCount = 0;
         } else {
           Updater.unsuccessfulFetchCount++;
diff --git a/changelog b/changelog
index 0d7755904..27004bb5b 100644
--- a/changelog
+++ b/changelog
@@ -1,4 +1,6 @@
 master
+- aeosynth
+  Beep on new post to completely read thread
 
 2.37.1
 - noface
diff --git a/script.coffee b/script.coffee
index 9c485a45b..3fafa724f 100644
--- a/script.coffee
+++ b/script.coffee
@@ -159,6 +159,7 @@ Config =
     hide:            ['x',      'Hide thread']
   updater:
     checkbox:
+      'Beep':        [false, 'Beep on new post to completely read thread']
       'Scrolling':   [false, 'Scroll updated posts into view. Only enabled at bottom of page.']
       'Scroll BG':   [false, 'Scroll background tabs']
       'Verbose':     [true,  'Show countdown timer, new post count']
@@ -2459,6 +2460,12 @@ Updater =
     $.on d, 'QRPostSuccessful', @cb.post
     $.on d, 'visibilitychange ovisibilitychange mozvisibilitychange webkitvisibilitychange', @cb.visibility
 
+  ###
+  http://freesound.org/people/pierrecartoons1979/sounds/90112/
+  cc-by-nc-3.0
+  ###
+  audio: $.el('audio', src: 'data:audio/wav;base64,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')
+
   cb:
     post: ->
       return unless Conf['Auto Update This']
@@ -2548,6 +2555,8 @@ Updater =
         Updater.count.className = if count then 'new' else null
 
       if count
+        if Conf['Beep'] and $.hidden() and (Unread.replies.length is 0)
+          Updater.audio.play()
         Updater.unsuccessfulFetchCount = 0
       else
         Updater.unsuccessfulFetchCount++