diff --git a/Cargo.toml b/Cargo.toml
index 5cf7b21..247bada 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ codecov = { repository = "petabi/petal-neighbors", service = "github" }
 [dependencies]
 ndarray = "0.16"
 num-traits = "0.2"
-ordered-float = "4"
+ordered-float = "5"
 thiserror = "2"
 
 [dev-dependencies]