diff --git a/Cargo.toml b/Cargo.toml
index 81d3c48..b951224 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,7 +37,7 @@ approx = "0.5"
 serde_json = "1"
 ciborium = "0.2"
 nalgebra = "0.35"
-num-dual = "0.14"
+num-dual = "0.15"
 ad_trait = "0.3.1"
 tempfile = "3"