diff --git a/Project.toml b/Project.toml
index 0cddebe..6213924 100644
--- a/Project.toml
+++ b/Project.toml
@@ -56,7 +56,7 @@ EchelleCCFs = ">=0.2.8"
 EchelleInstruments = ">=0.2.10"
 FileIO = "1.4"
 JLD2 = "0.4"
-LsqFit = "0.12, 0.13"
+LsqFit = "0.12, 0.13, 0.15"
 MD5 = "0.2"
 Missings = "0.4, 1"
 MultivariateStats = "0.8, 0.9, 0.10"