diff --git a/Cargo.toml b/Cargo.toml
index 43733f3..eaf5666 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ approx = "0.5"
 serde_json = "1"
 ciborium = "0.2"
 nalgebra = "0.34"
-num-dual = "0.11"
+num-dual = "0.13"
 ad_trait = "0.2.2"
 tempfile = "3"