diff --git a/TwitterEgoNetworkExtraction/pom.xml b/TwitterEgoNetworkExtraction/pom.xml
index 9c31d51..d46b486 100644
--- a/TwitterEgoNetworkExtraction/pom.xml
+++ b/TwitterEgoNetworkExtraction/pom.xml
@@ -33,7 +33,7 @@
 	<dependency>
 	    <groupId>org.apache.commons</groupId>
 	    <artifactId>commons-collections4</artifactId>
-	    <version>4.0</version>
+	    <version>4.1</version>
 	</dependency>
 	
 	<dependency>