diff --git a/Project.toml b/Project.toml
index 4970a66a..639c3e1f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -23,6 +23,7 @@ EarthSciDataExt = "EarthSciData"
 GasChemExt = "GasChem"
 
 [compat]
+DataInterpolations = "6"
 DifferentialEquations = "7"
 EarthSciData = "0.10"
 EarthSciMLBase = "0.19"