diff --git a/Project.toml b/Project.toml
index 0f7d8f2..d3f0b3d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -26,6 +26,7 @@ StatsAPI = "82ae8749-77ed-4fe6-ae5f-f523153014b0"
 Distributions = "0.25"
 FillArrays = "0, 1"
 MultivariateStats = "0"
+ProximalCore = "0.1"
 Statistics = "1"
 StatsAPI = "1"
 julia = "1.9"