diff --git a/test/Project.toml b/test/Project.toml
index 15bc6c96..ca92856d 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -31,7 +31,7 @@ FFTW = "1.1"
 IteratorInterfaceExtensions = "1"
 KernelDensity = "0.6.2"
 MCMCChains = "6"
-MLJBase = "0.18, 0.19, 0.20, 0.21"
+MLJBase = "0.18, 0.19, 0.20, 0.21, 1"
 MLJDecisionTreeInterface = "0.3, 0.4"
 StatsBase = "0.33.2, 0.34"
 StatsPlots = "0.14.17, 0.15"