diff --git a/Project.toml b/Project.toml
index 86a9e72..1bc3fe5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -51,7 +51,7 @@ QuantumOpticsBase = "0.4.17"
 QuantumSymbolics = "0.2.5"
 Random = "1"
 Reexport = "1.2.2"
-ResumableFunctions = "0.6.1"
+ResumableFunctions = "0.6.1 - 0.6.6"
 Statistics = "1"
 SumTypes = "0.5.1"
 julia = "1.9"