diff --git a/requirements.txt b/requirements.txt
index 6d912e39a..18d8d6377 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ seaborn==0.13 # To visualize clustering results
 
 # --- Machine Learning / Optimization ---
 scikit-learn==1.6.*
-optuna==4.3.*
+optuna==4.5.*
 umap-learn==0.5.* # Dimensionality reduction to visualize node embeddings in 2D
 
 # --- Database connector ---