diff --git a/Chapter3-1-5/pom.xml b/Chapter3-1-5/pom.xml
old mode 100755
new mode 100644
index 69068183..71f8da77
--- a/Chapter3-1-5/pom.xml
+++ b/Chapter3-1-5/pom.xml
@@ -43,7 +43,7 @@
 		<dependency>
 			<groupId>io.springfox</groupId>
 			<artifactId>springfox-swagger2</artifactId>
-			<version>2.2.2</version>
+			<version>2.3.1</version>
 		</dependency>
 		<dependency>
 			<groupId>io.springfox</groupId>