diff --git a/Project.toml b/Project.toml
index 9957e68b..997d9178 100644
--- a/Project.toml
+++ b/Project.toml
@@ -39,7 +39,7 @@ DiskArrayTools = "0.1"
 DiskArrays = "0.3"
 DocStringExtensions = "0.8, 0.9"
 Glob = "1.3"
-Interpolations = "0.12, 0.13, 0.14"
+Interpolations = "0.12, 0.13, 0.14, 0.15"
 IntervalSets = "0.3, 0.4, 0.5, 0.6, 0.7"
 IterTools = "1"
 OffsetArrays = "1"