diff --git a/devtools/shared/css/generated/properties-db.js b/devtools/shared/css/generated/properties-db.js
index 11876907c85c..3dd78edea593 100644
--- a/devtools/shared/css/generated/properties-db.js
+++ b/devtools/shared/css/generated/properties-db.js
@@ -10202,6 +10202,20 @@ exports.CSS_PROPERTIES = {
       "uppercase"
     ]
   },
+  "text-underline-offset": {
+    "isInherited": true,
+    "subproperties": [
+      "text-underline-offset"
+    ],
+    "supports": [],
+    "values": [
+      "auto",
+      "inherit",
+      "initial",
+      "revert",
+      "unset"
+    ]
+  },
   "top": {
     "isInherited": false,
     "subproperties": [
diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
index 863efe3405c8..60aa6e189162 100644
--- a/modules/libpref/init/StaticPrefList.yaml
+++ b/modules/libpref/init/StaticPrefList.yaml
@@ -4056,7 +4056,7 @@
 # text underline offset
 - name: layout.css.text-underline-offset.enabled
   type: bool
-  value: false
+  value: @IS_EARLY_BETA_OR_EARLIER@
   mirror: always
 
 # text decoration thickness