diff --git a/Project.toml b/Project.toml
index fccd1cc..483fa81 100644
--- a/Project.toml
+++ b/Project.toml
@@ -17,7 +17,7 @@ MPSKit = "0.11"
 MacroTools = "0.5"
 PrecompileTools = "1"
 TensorKit = "0.11, 0.12"
-TensorOperations = "4"
+TensorOperations = "4, 5"
 TupleTools = "1"
 julia = "1.8"