diff --git a/Project.toml b/Project.toml
index d233537b..0751c292 100644
--- a/Project.toml
+++ b/Project.toml
@@ -75,7 +75,7 @@ LogExpFunctions = "0.3.16"
 LsqFit = "0.14, 0.15"
 Measurements = "2.5"
 Measures = "0.3"
-Optim = "1.7.5"
+Optim = "1.7.5, 2"
 Optimization = "3.26.0, 4"
 OptimizationBBO = "0.3, 0.4"
 OptimizationNLopt = "0.2, 0.3"