diff --git a/Project.toml b/Project.toml
index 5e1c1604b..88b43d981 100644
--- a/Project.toml
+++ b/Project.toml
@@ -51,7 +51,7 @@ UnitfulAstro = "6112ee07-acf9-5e0f-b108-d242c714bf9f"
 Bessels = "0.2.8"
 ChainRulesCore = "1.25.1"
 CommonSolve = "0.2.4"
-DataInterpolations = "8.0.0"
+DataInterpolations = "8.0.0, 9"
 FastChebInterp = "1"
 ForwardDiff = "0.10, 1.0.0"
 ForwardDiffChainRules = "0.3.0"