diff --git a/pom.xml b/pom.xml
index 26e91a5..67e7f3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -76,7 +76,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>
-            <version>4.0</version>
+            <version>4.1</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/junit/junit -->
         <dependency>
@@ -177,7 +177,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>
-            <version>4.0</version>
+            <version>4.1</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>