diff --git a/pulser-simulation/requirements.txt b/pulser-simulation/requirements.txt
index 7ccd7f816..e296eb4a3 100644
--- a/pulser-simulation/requirements.txt
+++ b/pulser-simulation/requirements.txt
@@ -1,2 +1,2 @@
-qutip>=4.6.3
+qutip>=4.7.1
 typing-extensions; python_version == '3.7'