diff --git a/shongo-controller/pom.xml b/shongo-controller/pom.xml
index 7c33ceaf5..7394c0969 100644
--- a/shongo-controller/pom.xml
+++ b/shongo-controller/pom.xml
@@ -184,7 +184,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>
-            <version>4.0</version>
+            <version>4.1</version>
         </dependency>
 
         <!-- Support for iCalendar specification -->