diff --git a/ml-service/requirements.txt b/ml-service/requirements.txt
index 27619e60..3e1d0a83 100644
--- a/ml-service/requirements.txt
+++ b/ml-service/requirements.txt
@@ -5,4 +5,4 @@ redis==5.2.1
 
 # ML dependencies (optional – service degrades gracefully without them)
 numpy==1.26.4
-scikit-learn==1.4.2
+scikit-learn==1.9.0