diff --git a/Project.toml b/Project.toml
index 72a4b78..dda7264 100644
--- a/Project.toml
+++ b/Project.toml
@@ -27,7 +27,7 @@ AbstractFFTs = "1.1"
 Clustering = "0.13 - 0.14, 0.15"
 DataStructures = "0.17 - 0.18"
 Distributions = "0.21 - 0.25"
-Interpolations = "0.12 - 0.14"
+Interpolations = "0.12 - 0.14, 0.15"
 KernelDensity = "0.5 - 0.6"
 MultivariateStats = "0.9, 0.10"
 NaNMath = "1"