diff --git a/requirements.txt b/requirements.txt
index bcb6d55..4060042 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 amici
-biosimulators_utils >= 0.1.32
+biosimulators_utils >= 0.1.33
 numpy
 sympy >= 1.7