diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/enumeration/SubjectType.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/enumeration/SubjectType.java
index ee94993..2749b9e 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/enumeration/SubjectType.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/enumeration/SubjectType.java
@@ -31,6 +31,10 @@ public enum SubjectType {
      * 营业执照上的主体类型一般为个体户、个体工商户、个体经营；
      */
     SUBJECT_TYPE_INDIVIDUAL,
+    /**
+     * 小微商户
+     */
+    SUBJECT_TYPE_MICRO,
     /**
      * 企业
      * <p>