diff --git a/source/appendixes/coretasks/ReplaceRegexpTask.xml b/source/appendixes/coretasks/ReplaceRegexpTask.xml
index 188ae1e5..445ad6ec 100644
--- a/source/appendixes/coretasks/ReplaceRegexpTask.xml
+++ b/source/appendixes/coretasks/ReplaceRegexpTask.xml
@@ -71,6 +71,17 @@
                     <entry>n/a</entry>
                     <entry>Yes</entry>
                 </row>
+                <row>
+                    <entry>
+                        <literal>flags</literal>
+                    </entry>
+                    <entry>
+                        <literal role="type">String</literal>
+                    </entry>
+                    <entry>Regular expression flags</entry>
+                    <entry>n/a</entry>
+                    <entry>no</entry>
+                </row>
                 <row>
                     <entry>
                         <literal>failonerror</literal>