diff --git a/Project.toml b/Project.toml
index 8378cb1..6367b94 100644
--- a/Project.toml
+++ b/Project.toml
@@ -25,7 +25,7 @@ AtomsBuilder = "0.2.2"
 AtomsCalculators = "0.2.3"
 DocStringExtensions = "0.9"
 LineSearches = "7"
-Optimization = "3"
+Optimization = "3, 4"
 OptimizationOptimJL = "0.3"
 PrettyTables = "2"
 StaticArrays = "1"