diff --git a/Project.toml b/Project.toml
index 11c498e..7457652 100644
--- a/Project.toml
+++ b/Project.toml
@@ -62,7 +62,7 @@ Plots = "1.40.9"
 PrecompileTools = "1.2"
 Printf = "1.10"
 ProgressMeter = "1.7.2"
-QuantumCumulants = "0.4"
+QuantumCumulants = "0.3.7, 0.4"
 QuestBase = "0.3.4"
 Random = "1.10"
 RuntimeGeneratedFunctions = "0.5.5"