diff --git a/CoreJava/pom.xml b/CoreJava/pom.xml
index 7f5e611..89c34a1 100644
--- a/CoreJava/pom.xml
+++ b/CoreJava/pom.xml
@@ -11,7 +11,7 @@
 		<dependency>
 			<groupId>org.apache.poi</groupId>
 			<artifactId>poi</artifactId>
-			<version>3.17</version>
+			<version>4.1.1</version>
 		</dependency>
 
 		<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->