diff --git a/Project.toml b/Project.toml
index f425456..aed0e4f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -62,6 +62,7 @@ MD5 = "0.2"
 Missings = "0.4, 1"
 MultivariateStats = "0.8, 0.9, 0.10"
 Plots = "1"
+Pluto = "0.20"
 Polynomials = "3, 4"
 Query = "1"
 RvSpectML = "0.2.7"