diff --git a/Project.toml b/Project.toml
index d60fa60..29446fe 100644
--- a/Project.toml
+++ b/Project.toml
@@ -148,7 +148,7 @@ Loess = "0.5.3, 0.6"
 Lux = "0.4"
 MCMCChains = "5.0, 6"
 MCMCDiagnosticTools = "0.1"
-MLJ = "0.19"
+MLJ = "0.19, 0.21"
 MLJBase = "0.20, 0.21"
 MLJFlux = "0.2"
 MLJXGBoostInterface = "0.2, 0.3"