diff --git a/optapp/pom.xml b/optapp/pom.xml
index 438d073..7a031da 100644
--- a/optapp/pom.xml
+++ b/optapp/pom.xml
@@ -44,7 +44,7 @@
 	<dependency>
 			<groupId>org.apache.poi</groupId>
 			<artifactId>poi</artifactId>
-			<version>3.17</version>
+			<version>4.1.1</version>
 	</dependency>
 
 	<dependency>