diff --git a/Cryptography-for-Developers/server/pom.xml b/Cryptography-for-Developers/server/pom.xml
index 8b3677d..8731b79 100644
--- a/Cryptography-for-Developers/server/pom.xml
+++ b/Cryptography-for-Developers/server/pom.xml
@@ -40,7 +40,7 @@
 		<dependency>
 			<groupId>org.hsqldb</groupId>
 			<artifactId>hsqldb</artifactId>
-			<version>2.3.4</version>
+			<version>2.7.1</version>
 		</dependency>
 
 		<dependency>