diff --git a/Project.toml b/Project.toml
index 32a4908..ca396db 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ ToeplitzMatrices = "c751599d-da0a-543b-9d20-d0a503d91d24"
 [compat]
 Distributions = "0.21, 0.22, 0.23, 0.24, 0.25"
 FileIO = "1"
-Interpolations = "0.12, 0.13, 0.14"
+Interpolations = "0.12, 0.13, 0.14, 0.15"
 JLD2 = "0.4"
 SpecialFunctions = "0.8, 0.9, 0.10, 1.0, 2"
 StaticArrays = "0.12, 1.1"