diff --git a/Project.toml b/Project.toml
index d2af07f29..fa2e6e5f5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -71,6 +71,7 @@ Images = "0.23, 0.24"
 Ipopt = "0.6, 0.7"
 JSServe = "1"
 JuMP = "0.21"
+LazySets = "1"
 Luxor = "2.10"
 Makie = "0.14, 0.15"
 MeshIO = "0.4"