diff --git a/pom.xml b/pom.xml
index c9437bb5b6c21f77580180d3adb2e6aa908d911d..34bd470027dc9ecdecff3072871aaac54f470576 100644
--- a/pom.xml
+++ b/pom.xml
@@ -189,7 +189,13 @@
 		<dependency>
 			<groupId>org.graphstream</groupId>
 			<artifactId>gs-core</artifactId>
-			<version>1.0</version>
+			<version>1.1</version>
+			<optional>false</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.graphstream</groupId>
+			<artifactId>gs-algo</artifactId>
+			<version>1.1</version>
 			<optional>false</optional>
 		</dependency>
 	</dependencies>