diff --git a/src/main/resources/sharding_detail.xsd b/src/main/resources/sharding_detail.xsd
index fa089c2df..2e20fe186 100644
--- a/src/main/resources/sharding_detail.xsd
+++ b/src/main/resources/sharding_detail.xsd
@@ -32,6 +32,7 @@
                                         <xs:attribute name="parentColumn" type="xs:string" use="required"/>
                                         <xs:attribute name="incrementColumn" type="xs:string"/>
                                         <xs:attribute name="sqlMaxLimit" type="xs:integer"/>
+                                        <xs:attribute name="specifyCharset" type="xs:boolean"/>
                                     </xs:complexType>
                                 </xs:element>
                             </xs:sequence>