diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index d874b2985..b9e87bf8e 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -27648,6 +27648,7 @@ intl/DateTimeFormat[JC] def supportedLocalesOf(locales: String | js.Array[String
 intl/DateTimeFormatOptions[JT] var day: js.UndefOr[String]
 intl/DateTimeFormatOptions[JT] var era: js.UndefOr[String]
 intl/DateTimeFormatOptions[JT] var formatMatcher: js.UndefOr[String]
+intl/DateTimeFormatOptions[JT] var fractionalSecondDigits: js.UndefOr[Int]
 intl/DateTimeFormatOptions[JT] var hour: js.UndefOr[String]
 intl/DateTimeFormatOptions[JT] var hour12: js.UndefOr[Boolean]
 intl/DateTimeFormatOptions[JT] var localeMatcher: js.UndefOr[String]
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index d874b2985..b9e87bf8e 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -27648,6 +27648,7 @@ intl/DateTimeFormat[JC] def supportedLocalesOf(locales: String | js.Array[String
 intl/DateTimeFormatOptions[JT] var day: js.UndefOr[String]
 intl/DateTimeFormatOptions[JT] var era: js.UndefOr[String]
 intl/DateTimeFormatOptions[JT] var formatMatcher: js.UndefOr[String]
+intl/DateTimeFormatOptions[JT] var fractionalSecondDigits: js.UndefOr[Int]
 intl/DateTimeFormatOptions[JT] var hour: js.UndefOr[String]
 intl/DateTimeFormatOptions[JT] var hour12: js.UndefOr[Boolean]
 intl/DateTimeFormatOptions[JT] var localeMatcher: js.UndefOr[String]
diff --git a/dom/src/main/scala/org/scalajs/dom/intl/DateTimeFormatOptions.scala b/dom/src/main/scala/org/scalajs/dom/intl/DateTimeFormatOptions.scala
index 958b1b012..7cf4d415e 100644
--- a/dom/src/main/scala/org/scalajs/dom/intl/DateTimeFormatOptions.scala
+++ b/dom/src/main/scala/org/scalajs/dom/intl/DateTimeFormatOptions.scala
@@ -57,6 +57,11 @@ trait DateTimeFormatOptions extends js.Object {
 
   /** The representation of the time zone name. Possible values are "short", "long". */
   var timeZoneName: js.UndefOr[String] = js.undefined
+
+  /** The number of digits used to represent fractions of a second (any additional digits are truncated). Possible
+    * values are 1, 2, 3.
+    */
+  var fractionalSecondDigits: js.UndefOr[Int] = js.undefined
 }
 
 @deprecated("all members of DateTimeFormatOptions are deprecated", "2.0.0")