diff --git a/pom.xml b/pom.xml
index c9a7d65..41a5e67 100644
--- a/pom.xml
+++ b/pom.xml
@@ -179,6 +179,12 @@
             </dependency>
 
             <dependency>
+                <groupId>commons-collections</groupId>
+                <artifactId>commons-collections</artifactId>
+                <version>3.2.1</version>
+            </dependency>
+
+            <dependency>
                 <groupId>org.apache.commons</groupId>
                 <artifactId>commons-collections4</artifactId>
                 <version>4.0</version>