diff --git a/docs/Project.toml b/docs/Project.toml
index dc19075..fc1bdc4 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -8,7 +8,7 @@ RegularizationTools = "29dad682-9a27-4bc3-9c72-016788665182"
 StableRNGs = "860ef19b-820b-49d6-a774-d7a799459cd3"
 
 [compat]
-DataInterpolations = "4, 5, 6, 7, 8"
+DataInterpolations = "4, 5, 6, 7, 8, 9.0"
 Documenter = "1"
 FindFirstFunctions = "1.4.2, 2.0, 3.0"
 Optim = "1, 2.0"