diff --git a/reference/pcntl/constants.xml b/reference/pcntl/constants.xml
index aab5cdd818cc..b3e1da7c4b35 100644
--- a/reference/pcntl/constants.xml
+++ b/reference/pcntl/constants.xml
@@ -558,6 +558,30 @@
     </simpara>
    </listitem>
   </varlistentry>
+  <varlistentry xml:id="constant.sigckpt">
+   <term>
+    <constant>SIGCKPT</constant>
+    (<type>int</type>)
+   </term>
+   <listitem>
+    <simpara>
+     Generates/restores a checkpoint.
+     Available from PHP 8.4.0 (DragonFlyBSD only).
+    </simpara>
+   </listitem>
+  </varlistentry>
+  <varlistentry xml:id="constant.sigckptexit">
+   <term>
+    <constant>SIGCKPTEXIT</constant>
+    (<type>int</type>)
+   </term>
+   <listitem>
+    <simpara>
+     Generates/restores a checkpoint and exit.
+     Available from PHP 8.4.0 (DragonFlyBSD only).
+    </simpara>
+   </listitem>
+  </varlistentry>
  </variablelist>
 
  <variablelist xml:id="pcntl.constants.si">