diff --git a/reference/posix/constants.xml b/reference/posix/constants.xml
index 62d227f159e2..87e3c77c7e29 100644
--- a/reference/posix/constants.xml
+++ b/reference/posix/constants.xml
@@ -358,6 +358,30 @@
      </simpara>
     </listitem>
    </varlistentry>
+   <varlistentry xml:id="constant.posix-rlimit-kqueues">
+    <term>
+     <constant>POSIX_RLIMIT_KQUEUES</constant>
+      (<type>int</type>)
+    </term>
+    <listitem>
+     <simpara>
+      The maximum number of kqueues this user id is allowed to create (FreeBSD).
+      Available as of PHP 8.1.0.
+     </simpara>
+    </listitem>
+   </varlistentry>
+   <varlistentry xml:id="constant.posix-rlimit-npts">
+    <term>
+     <constant>POSIX_RLIMIT_NPTS</constant>
+      (<type>int</type>)
+    </term>
+    <listitem>
+     <simpara>
+      The maximum number of pseudo-terminals this user id is allowed to create (FreeBSD).
+      Available as of PHP 8.1.0.
+     </simpara>
+    </listitem>
+   </varlistentry>
   </variablelist>
  </section>
 </appendix>