diff --git a/tsne-demos/pom.xml b/tsne-demos/pom.xml
index 4f311a8..5948726 100644
--- a/tsne-demos/pom.xml
+++ b/tsne-demos/pom.xml
@@ -80,7 +80,7 @@
 		<dependency>
 			<groupId>org.apache.poi</groupId>
 			<artifactId>poi</artifactId>
-			<version>3.11</version>
+			<version>4.1.1</version>
 			<optional>true</optional>
 		</dependency>
 	</dependencies>