diff --git a/requirements-install.txt b/requirements-install.txt
index 4276ef3..d472537 100644
--- a/requirements-install.txt
+++ b/requirements-install.txt
@@ -38,7 +38,7 @@ python-multipart>=0.0.20
 
 # MLOps
 mlflow>=2.1.0
-optuna>=3.1.0
+optuna>=4.9.0
 
 # Testing and Development
 pytest>=7.0.0
diff --git a/requirements.txt b/requirements.txt
index 2c0e158..6266d36 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,7 +45,7 @@ python-multipart>=0.0.20
 
 # MLOps (optional)
 mlflow>=2.1.0
-optuna>=3.1.0
+optuna>=4.9.0
 
 # Explainability & Governance
 shap>=0.42.0