diff --git a/README.md b/README.md
index 5957f74..0ea6515 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ Add Maven dependencies into pom.xml
 <dependency>
     <groupId>com.aliyun</groupId>
     <artifactId>aliyun-java-sdk-fc</artifactId>
-    <version>1.8.19</version>
+    <version>1.8.22</version>
 </dependency>
 ```
 
diff --git a/pom.xml b/pom.xml
index 2145be8..807fe5b 100755
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <groupId>com.aliyun</groupId>
     <artifactId>aliyun-java-sdk-fc</artifactId>
     <packaging>jar</packaging>
-    <version>1.8.21</version>
+    <version>1.8.22</version>
     <name>aliyun-java-sdk-fc</name>
     <url>https://www.aliyun.com/product/fc</url>
     <description>Aliyun Java SDK for FunctionCompute</description>
diff --git a/src/main/java/com/aliyuncs/fc/model/Layer.java b/src/main/java/com/aliyuncs/fc/model/Layer.java
index 73c1a79..b81b47b 100644
--- a/src/main/java/com/aliyuncs/fc/model/Layer.java
+++ b/src/main/java/com/aliyuncs/fc/model/Layer.java
@@ -1,5 +1,7 @@
 package com.aliyuncs.fc.model;
 
+import org.apache.commons.lang.StringUtils;
+
 import java.util.Arrays;
 
 public class Layer {
@@ -12,6 +14,7 @@ public class Layer {
     private String createTime;
     private String[] compatibleRuntime;
     private Integer acl;
+    private String arn;
     private String Arn;
 
     public String getLayerName() {
@@ -87,11 +90,15 @@ public void setAcl(Integer acl) {
     }
 
     public String getArn() {
+        if (StringUtils.isNotBlank(arn)) {
+            return arn;
+        }
         return Arn;
     }
 
     public void setArn(String arn) {
         this.Arn = arn;
+        this.arn = arn;
     }
 
     @Override
@@ -106,7 +113,7 @@ public String toString() {
                 ", createTime='" + createTime + '\'' +
                 ", compatibleRuntime=" + Arrays.toString(compatibleRuntime) +
                 ", acl=" + acl +
-                ", Arn='" + Arn + '\'' +
+                ", arn='" + arn + '\'' +
                 '}';
     }
 }