diff --git a/reference/mbstring/functions/mb-decode-numericentity.xml b/reference/mbstring/functions/mb-decode-numericentity.xml
index 69debb1b56ae..f936c287dce0 100644
--- a/reference/mbstring/functions/mb-decode-numericentity.xml
+++ b/reference/mbstring/functions/mb-decode-numericentity.xml
@@ -66,6 +66,14 @@
   </para>
  </refsect1>
 
+ <refsect1 role="errors">
+  &reftitle.errors;
+  <simpara>
+   Throws a <exceptionname>ValueError</exceptionname> if
+   <parameter>map</parameter> doesn't contain integers only.
+  </simpara>
+ </refsect1>
+
  <refsect1 role="changelog">
   &reftitle.changelog;
   <informaltable>
@@ -77,6 +85,14 @@
      </row>
     </thead>
     <tbody>
+     <row>
+      <entry>8.4.0</entry>
+      <entry>
+       <function>mb_decode_numericentity</function> now throws a
+       <exceptionname>ValueError</exceptionname> if <parameter>map</parameter>
+       is invalid.
+      </entry>
+     </row>
      &mbstring.changelog.encoding-nullable;
     </tbody>
    </tgroup>
diff --git a/reference/mbstring/functions/mb-encode-numericentity.xml b/reference/mbstring/functions/mb-encode-numericentity.xml
index 9cc2a5c9ae08..f6a548e69acd 100644
--- a/reference/mbstring/functions/mb-encode-numericentity.xml
+++ b/reference/mbstring/functions/mb-encode-numericentity.xml
@@ -69,6 +69,14 @@
   </para>
  </refsect1>
 
+ <refsect1 role="errors">
+  &reftitle.errors;
+  <simpara>
+   Throws a <exceptionname>ValueError</exceptionname> if
+   <parameter>map</parameter> is not a list of &integers;.
+  </simpara>
+ </refsect1>
+
  <refsect1 role="changelog">
   &reftitle.changelog;
   <informaltable>
@@ -80,6 +88,14 @@
      </row>
     </thead>
     <tbody>
+     <row>
+      <entry>8.4.0</entry>
+      <entry>
+       <function>mb_encode_numericentity</function> now throws a
+       <exceptionname>ValueError</exceptionname> if <parameter>map</parameter>
+       is not a list of &integers;.
+      </entry>
+     </row>
      &mbstring.changelog.encoding-nullable;
     </tbody>
    </tgroup>
diff --git a/reference/mbstring/functions/mb-http-input.xml b/reference/mbstring/functions/mb-http-input.xml
index ac0feb1459e2..cea109778556 100644
--- a/reference/mbstring/functions/mb-http-input.xml
+++ b/reference/mbstring/functions/mb-http-input.xml
@@ -46,6 +46,14 @@
   </para>
  </refsect1>
 
+ <refsect1 role="errors">
+  &reftitle.errors;
+  <simpara>
+   Throws a <exceptionname>ValueError</exceptionname> if
+   <parameter>type</parameter> is invalid.
+  </simpara>
+ </refsect1>
+
  <refsect1 role="changelog">
   &reftitle.changelog;
   <informaltable>
@@ -57,6 +65,14 @@
      </row>
     </thead>
     <tbody>
+     <row>
+      <entry>8.4.0</entry>
+      <entry>
+       <function>mb_http_input</function> now throws a
+       <exceptionname>ValueError</exceptionname> if <parameter>type</parameter>
+       is invalid.
+      </entry>
+     </row>
      <row>
       <entry>8.0.0</entry>
       <entry>
diff --git a/reference/mbstring/functions/mb-http-output.xml b/reference/mbstring/functions/mb-http-output.xml
index a4df9cf1c954..d2ea65ed09b8 100644
--- a/reference/mbstring/functions/mb-http-output.xml
+++ b/reference/mbstring/functions/mb-http-output.xml
@@ -51,6 +51,14 @@
   </para>
  </refsect1>
 
+ <refsect1 role="errors">
+  &reftitle.errors;
+  <simpara>
+   Throws a <exceptionname>ValueError</exceptionname> if
+   <parameter>encoding</parameter> contains null bytes.
+  </simpara>
+ </refsect1>
+
  <refsect1 role="changelog">
   &reftitle.changelog;
   <informaltable>
@@ -62,6 +70,14 @@
      </row>
     </thead>
     <tbody>
+     <row>
+      <entry>8.4.0</entry>
+      <entry>
+       <function>mb_http_output</function> now throws a
+       <exceptionname>ValueError</exceptionname> if <parameter>encoding</parameter>
+       contains null bytes.
+      </entry>
+     </row>
      &mbstring.changelog.encoding-nullable;
     </tbody>
    </tgroup>