diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml
index 3a2421b..6a2e48b 100644
--- a/doc/src/sgml/protocol.sgml
+++ b/doc/src/sgml/protocol.sgml
@@ -1428,10 +1428,10 @@ The commands accepted in walsender mode are:
   </varlistentry>
 
   <varlistentry>
-    <term><literal>CREATE_REPLICATION_SLOT</literal> <replaceable class="parameter">slotname</> <literal>PHYSICAL</literal><indexterm><primary>CREATE_REPLICATION_SLOT</primary></indexterm></term>
+    <term><literal>CREATE_REPLICATION_SLOT</literal> <replaceable class="parameter">slotname</> { <literal>PHYSICAL</> | <literal>LOGICAL</> <replaceable class="parameter">output_plugin</> } <indexterm><primary>CREATE_REPLICATION_SLOT</primary></indexterm></term>
     <listitem>
      <para>
-      Create a physical replication
+      Create a physical or logical replication
       slot. See <xref linkend="streaming-replication-slots"> for more about
       replication slots.
      </para>
@@ -1445,6 +1445,16 @@ The commands accepted in walsender mode are:
          </para>
        </listitem>
       </varlistentry>
+
+      <varlistentry>
+       <term><replaceable class="parameter">output_plugin</></term>
+       <listitem>
+         <para>
+          The name of the output plugin used for logical decoding
+          (see <xref linkend="logicaldecoding-output-plugin">).
+         </para>
+       </listitem>
+      </varlistentry>
      </variablelist>
     </listitem>
   </varlistentry>