diff --git a/Project.toml b/Project.toml
index 5670237..f3aa542 100644
--- a/Project.toml
+++ b/Project.toml
@@ -21,6 +21,7 @@ ForwardDiff = "1"
 JuMP = "1.29.4"
 MathOptInterface = "1.40"
 NaNMath = "1"
+OrderedCollections = "1.8.1"
 SparseArrays = "1.10"
 SpecialFunctions = "2.6.1"
 julia = "1.10"