diff --git a/pdf/pdf/pom.xml b/pdf/pdf/pom.xml
index 2249b19..dee01bd 100644
--- a/pdf/pdf/pom.xml
+++ b/pdf/pdf/pom.xml
@@ -25,7 +25,7 @@
 		<dependency>
 			<groupId>org.apache.poi</groupId>
 			<artifactId>poi</artifactId>
-			<version>3.17</version>
+			<version>4.1.1</version>
 		</dependency>
 
 		<dependency>