diff --git a/browser/components/preferences/in-content/tenfourfox.js b/browser/components/preferences/in-content/tenfourfox.js
index c1e1f8d6b..ce9deb9eb 100644
--- a/browser/components/preferences/in-content/tenfourfox.js
+++ b/browser/components/preferences/in-content/tenfourfox.js
@@ -39,7 +39,8 @@ var gTenFourFoxPane = {
   // Find and set the appropriate UA string based on the UA template.
   validUA : {
       "fx" : "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Firefox/52.0",
-      "fx60" : "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Firefox/60.0",
+      "fx60" : "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Firefox/60.0",
+      "fx68" : "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Firefox/68.0",
       "classilla" : "NokiaN90-1/3.0545.5.1 Series60/2.8 Profile/MIDP-2.0 Configuration/CLDC-1.1 (en-US; rv:9.3.3) Clecko/20141026 Classilla/CFM",
       "ie8" : "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)",
       "ie11" : "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko",
diff --git a/browser/components/preferences/in-content/tenfourfox.xul b/browser/components/preferences/in-content/tenfourfox.xul
index ff4cfb966..bdf9d76c4 100644
--- a/browser/components/preferences/in-content/tenfourfox.xul
+++ b/browser/components/preferences/in-content/tenfourfox.xul
@@ -63,6 +63,7 @@
                 preference="tenfourfox.ua.template">
           <menupopup>
               <menuitem label="&TFFuserAgent.default;" value=""/>
+              <menuitem label="Firefox 68ESR (Intel)" value="fx68"/>
               <menuitem label="Firefox 60ESR (Intel)" value="fx60"/>
               <menuitem label="Firefox 52ESR (Intel)" value="fx"/>
               <menuitem label="Classilla 9.3.x" value="classilla"/>