diff --git a/ch18-7/ch18-7-gateway/pom.xml b/ch18-7/ch18-7-gateway/pom.xml
old mode 100755
new mode 100644
index 9377b71d..4f9ef409
--- a/ch18-7/ch18-7-gateway/pom.xml
+++ b/ch18-7/ch18-7-gateway/pom.xml
@@ -39,7 +39,7 @@
 		<dependency>
 			<groupId>com.alibaba</groupId>
 			<artifactId>fastjson</artifactId>
-			<version>1.2.47</version>
+			<version>1.2.83</version>
 		</dependency>
 
 	</dependencies>