diff --git a/Project.toml b/Project.toml
index 718f2cc..48eacd6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -36,7 +36,7 @@ QuantumClifford = "0.9.4, 0.10"
 QuantumInterface = "0.4.1"
 QuantumOpticsBase = "0.5.6"
 QuantumToolbox = "0.34.0"
-SymbolicUtils = "3.13"
+SymbolicUtils = "3.13, 4"
 Symbolics = "6"
 TermInterface = "2"
 julia = "1.10"