diff --git a/pom.xml b/pom.xml
index 344f3b19..c36f12e3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -221,7 +221,7 @@
 		<dependency>
 			<groupId>org.cicirello</groupId>
 			<artifactId>rho-mu</artifactId>
-			<version>3.2.0</version>
+			<version>4.0.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.cicirello</groupId>