diff --git a/ciborium-ll/Cargo.toml b/ciborium-ll/Cargo.toml
index 616c6e0..9532612 100644
--- a/ciborium-ll/Cargo.toml
+++ b/ciborium-ll/Cargo.toml
@@ -22,7 +22,7 @@ is-it-maintained-open-issues = { repository = "enarx/ciborium" }
 
 [dependencies]
 ciborium-io = { path = "../ciborium-io", version = "0.2.2" }
-half = { version = "2.3.1", default-features = false}
+half = { version = "2.4.0", default-features = false}
 
 [dev-dependencies]
 hex = "0.4"
diff --git a/ciborium/Cargo.toml b/ciborium/Cargo.toml
index c18ac47..ce5731f 100644
--- a/ciborium/Cargo.toml
+++ b/ciborium/Cargo.toml
@@ -27,7 +27,7 @@ serde = { version = "1.0.170", default-features = false, features = ["alloc", "d
 
 [dev-dependencies]
 serde_bytes = "0.11"
-rstest = "0.17"
+rstest = "0.18.2"
 rand = "0.8"
 hex = "0.4"
 
diff --git a/ciborium/src/value/de.rs b/ciborium/src/value/de.rs
index ece9093..c1cc8ef 100644
--- a/ciborium/src/value/de.rs
+++ b/ciborium/src/value/de.rs
@@ -3,7 +3,7 @@
 use super::{Error, Integer, Value};
 
 use alloc::{boxed::Box, string::String, vec::Vec};
-use core::{iter::Peekable, mem::size_of};
+use core::iter::Peekable;
 
 use ciborium_ll::tag;
 use serde::de::{self, Deserializer as _};