diff --git a/Project.toml b/Project.toml
index 597e687..3134bcb 100644
--- a/Project.toml
+++ b/Project.toml
@@ -20,5 +20,6 @@ AbstractTrees = "0.4"
 Catlab = "0.16"
 CuthillMcKee = "0.1"
 MLStyle = "0.4"
+Metis = "1"
 PartialFunctions = "1.1"
 julia = "1.7"