diff --git a/Project.toml b/Project.toml
index efdc26c..a1d7e7c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -31,7 +31,7 @@ CSV = "0.7, 0.8, 0.9.10, 0.9.11, 0.10"
 DataFrames = "0.20, 0.21, 0.22, 1.0, 1.1"
 FITSIO = "0.16"
 ForwardDiff = "0.10"
-LsqFit = "0.11, 0.12"
+LsqFit = "0.11, 0.12, 0.13"
 NaNMath = "0.3, 1"
 NamedTupleTools = "0.13, 0.14"
 Optim = "1.2"