diff --git a/ciborium/Cargo.toml b/ciborium/Cargo.toml
index 830f51d..6c0976c 100644
--- a/ciborium/Cargo.toml
+++ b/ciborium/Cargo.toml
@@ -28,7 +28,7 @@ serde = { version = "1.0.170", default-features = false, features = ["alloc", "d
 [dev-dependencies]
 serde_bytes = "0.11"
 rstest = "0.24.0"
-rand = "0.8"
+rand = "0.9"
 hex = "0.4"
 
 [features]