diff --git a/AcmePools/pom.xml b/AcmePools/pom.xml
index c7c0c71..f739cb4 100644
--- a/AcmePools/pom.xml
+++ b/AcmePools/pom.xml
@@ -40,7 +40,7 @@
         <dependency>
             <groupId>org.apache.poi</groupId>
             <artifactId>poi</artifactId>
-            <version>3.15</version>
+            <version>4.1.1</version>
         </dependency>
     </dependencies>