diff --git a/Project.toml b/Project.toml
index 369031b..94c4fbd 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,7 +12,10 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 
 [compat]
+DataFrames = "^0.19.4"
+Distributions = "^0.21.3"
 Documenter = "~0.19"
+StatsBase = "^0.32.0"
 julia = "^1.1.0"
 
 [extras]