diff --git a/Project.toml b/Project.toml
index 74973b2..07d86e1 100644
--- a/Project.toml
+++ b/Project.toml
@@ -25,5 +25,5 @@ MultivariateStats = "0.7"
 NMF = "0.4"
 Photometry = "0.5.1,0.6"
 Reexport = "0.2"
-StatsBase = "0.32"
+StatsBase = "0.32, 0.33"
 julia = "1.3"