diff --git a/Project.toml b/Project.toml
index 9e8aaa8..3762f01 100644
--- a/Project.toml
+++ b/Project.toml
@@ -17,6 +17,7 @@ Unitfu = "5ee08b94-2369-4f4a-b8c7-99333ba35fb0"
 
 [compat]
 MechanicalUnits = "0.3.1"
+Roots = "1.0"
 julia = "1.3.0"
 
 [extras]