diff --git a/defect-location-server/backend/pom.xml b/defect-location-server/backend/pom.xml
index 4e0fe6df..13922a3a 100644
--- a/defect-location-server/backend/pom.xml
+++ b/defect-location-server/backend/pom.xml
@@ -68,7 +68,7 @@
 		<dependency>
 			<groupId>commons-collections</groupId>
 			<artifactId>commons-collections</artifactId>
-			<version>3.1</version>
+			<version>3.2.2</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-lang</groupId>