diff --git a/Project.toml b/Project.toml
index 6e37b3b..da4cf9e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,7 @@ CSV = "0.7, 0.8"
 DataFrames = "0.21, 0.22"
 FITSIO = "0.16"
 ForwardDiff = "0.10"
-LsqFit = "0.11"
+LsqFit = "0.11, 0.12"
 NamedTupleTools = "0.13"
 Optim = "1.2"
 PDMats = "0.10"