diff --git a/exchange/pom.xml b/exchange/pom.xml
old mode 100755
new mode 100644
index 366d8a4..df06d51
--- a/exchange/pom.xml
+++ b/exchange/pom.xml
@@ -46,7 +46,7 @@
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.8.2</version>
+			<version>4.13.1</version>
 			<type>jar</type>
 			<scope>test</scope>
 		</dependency>