diff --git a/Project.toml b/Project.toml
index 713759a..50a9fcc 100644
--- a/Project.toml
+++ b/Project.toml
@@ -14,6 +14,7 @@ Roots = "f2b01f46-fcfa-551c-844a-d8ac1e96c665"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
 [compat]
+LsqFit = "0.8"
 Roots = "0.8"
 julia = "1"