diff --git a/pyproject.toml b/pyproject.toml
index 54bb330..0f2afbe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-sk-util = ["skfolio==0.4.0", "sktime==0.33.1"]
+sk-util = ["skfolio==0.4.1", "sktime==0.33.1"]
 bayes = [
     "arviz==0.19.0",
     "bambi==0.14.0",