diff --git a/reference/intl/numberformatter-constants.xml b/reference/intl/numberformatter-constants.xml
index 4dfe2f524b..d20eb52d4d 100644
--- a/reference/intl/numberformatter-constants.xml
+++ b/reference/intl/numberformatter-constants.xml
@@ -712,6 +712,15 @@
    <constant>NumberFormatter::ROUNDING_MODE</constant>
    属性に使用する丸めモードの値です。
    <variablelist>
+    <varlistentry xml:id="numberformatter.constants.round-away-from-zero">
+     <term>
+      <constant>NumberFormatter::ROUND_AWAY_FROM_ZERO</constant>
+     </term>
+     <listitem>
+      <simpara><constant>NumberFormatter::ROUND_UP</constant> &Alias;</simpara>
+     </listitem>
+    </varlistentry>
+
     <varlistentry xml:id="numberformatter.constants.round-ceiling">
      <term>
       <constant>NumberFormatter::ROUND_CEILING</constant>
@@ -768,6 +777,18 @@
      </listitem>
     </varlistentry>
 
+    <varlistentry xml:id="numberformatter.constants.round-halfodd">
+     <term>
+      <constant>NumberFormatter::ROUND_HALFODD</constant>
+     </term>
+     <listitem>
+      <simpara>
+       "一番近いところ" に向けて丸めるモード。
+       両方から等距離にある場合は奇数になるように丸めます。
+      </simpara>
+     </listitem>
+    </varlistentry>
+
     <varlistentry xml:id="numberformatter.constants.round-halfup">
      <term>
       <constant>NumberFormatter::ROUND_HALFUP</constant>
@@ -781,6 +802,15 @@
      </listitem>
     </varlistentry>
 
+    <varlistentry xml:id="numberformatter.constants.round-toward-zero">
+     <term>
+      <constant>NumberFormatter::ROUND_TOWARD_ZERO</constant>
+     </term>
+     <listitem>
+      <simpara><constant>NumberFormatter::ROUND_DOWN</constant> &Alias;</simpara>
+     </listitem>
+    </varlistentry>
+
     <varlistentry xml:id="numberformatter.constants.round-up">
      <term>
       <constant>NumberFormatter::ROUND_UP</constant>
diff --git a/reference/intl/numberformatter.xml b/reference/intl/numberformatter.xml
index a80cbfc3e7..d3259d2259 100644
--- a/reference/intl/numberformatter.xml
+++ b/reference/intl/numberformatter.xml
@@ -157,12 +157,30 @@
      <type>int</type>
      <varname linkend="numberformatter.constants.round-up">NumberFormatter::ROUND_UP</varname>
     </fieldsynopsis>
+    <fieldsynopsis>
+     <modifier>public</modifier>
+     <modifier>const</modifier>
+     <type>int</type>
+     <varname linkend="numberformatter.constants.round-toward-zero">NumberFormatter::ROUND_TOWARD_ZERO</varname>
+    </fieldsynopsis>
+    <fieldsynopsis>
+     <modifier>public</modifier>
+     <modifier>const</modifier>
+     <type>int</type>
+     <varname linkend="numberformatter.constants.round-away-from-zero">NumberFormatter::ROUND_AWAY_FROM_ZERO</varname>
+    </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="numberformatter.constants.round-halfeven">NumberFormatter::ROUND_HALFEVEN</varname>
     </fieldsynopsis>
+    <fieldsynopsis>
+     <modifier>public</modifier>
+     <modifier>const</modifier>
+     <type>int</type>
+     <varname linkend="numberformatter.constants.round-halfodd">NumberFormatter::ROUND_HALFODD</varname>
+    </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>