diff --git a/Project.toml b/Project.toml
index 87afc15..8f3d25d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ Unicode = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
 Combinatorics = "1"
 Crystalline = "0.4.22, 0.5"
 GellMannMatrices = "0.2"
-Optimization = "0.31"
+Optimization = "3.21"
 OptimizationOptimJL = "0.2.2"
 PrecompileTools = "1"
 PrettyTables = "2"