diff --git a/Project.toml b/Project.toml
index 380fdae..6d15ec2 100644
--- a/Project.toml
+++ b/Project.toml
@@ -24,6 +24,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
 [compat]
 DataStructures = "0.18"
+Distributions = "0.25"
 DocOpt = "0.4"
 HDF5 = "0.16"
 Optim = "1"