diff --git a/CHANGELOG.md b/CHANGELOG.md
index aeb10f9..7eda21f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 * [breaking] The control pipe is now provided in the `UsbDeviceBuilder` API to allow for user-provided control
 pipes. This makes it so that control pipes have configurable sizing.
 * Don't require UsbBus to be Sync. If a UsbBus is not Sync, it can still be used to make a UsbDevice, but that UsbDevice will not be Sync (ensuring soundness).
+* Update `defmt` to version 1.
+* Update `rand` to version 0.10.
 
 ## [0.3.2] - 2024-03-06
 
diff --git a/Cargo.toml b/Cargo.toml
index 33d1d6c..b1332c2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,14 +10,14 @@ authors = ["Matti Virkkunen <mvirkkunen@gmail.com>"]
 repository = "https://github.com/rust-embedded-community/usb-device"
 
 [dependencies]
-defmt = { version = "0.3", optional = true }
+defmt = { version = "1", optional = true }
 portable-atomic = { version = "1.2.0", default-features = false }
 heapless = "0.8"
 log = { version = "0.4", default-features = false, optional = true}
 
 [dev-dependencies]
 rusb = "0.9.1"
-rand = "0.8.5"
+rand = { version = "0.10", features = ["thread_rng"] }
 
 [features]
 
diff --git a/tests/test_class_host/device.rs b/tests/test_class_host/device.rs
index d204985..80282a7 100644
--- a/tests/test_class_host/device.rs
+++ b/tests/test_class_host/device.rs
@@ -60,7 +60,7 @@ pub fn open_device(ctx: &Context) -> rusb::Result<DeviceHandles> {
             continue;
         }
 
-        let mut handle = device.open()?;
+        let handle = device.open()?;
 
         let langs = handle.read_languages(TIMEOUT)?;
         if langs.is_empty() || langs[0].lang_id() != EN_US {
diff --git a/tests/test_class_host/tests.rs b/tests/test_class_host/tests.rs
index f745a1d..8ae0528 100644
--- a/tests/test_class_host/tests.rs
+++ b/tests/test_class_host/tests.rs
@@ -1,5 +1,6 @@
 use crate::device::*;
 use rand::prelude::*;
+use rand::rngs::ThreadRng;
 use rusb::{request_type, Direction, Recipient, RequestType, TransferType};
 use std::cmp::max;
 use std::fmt::Write;
@@ -31,11 +32,11 @@ macro_rules! tests {
 tests! {
 
 fn control_request(dev, _out) {
-    let mut rng = rand::thread_rng();
+    let mut rng = ThreadRng::default();
 
-    let value: u16 = rng.gen();
-    let index: u16 = rng.gen();
-    let data = random_data(rng.gen_range(0..16));
+    let value: u16 = rng.random();
+    let index: u16 = rng.random();
+    let data = random_data(rng.random_range(0..16));
 
     let mut expected = [0u8; 8];
     expected[0] = 0x02_u8 << 5;
@@ -318,6 +319,6 @@ fn run_bench(dev: &DeviceHandles, out: &mut String, f: impl Fn(&mut [u8])) {
 
 fn random_data(len: usize) -> Vec<u8> {
     let mut data = vec![0u8; len];
-    rand::thread_rng().fill(data.as_mut_slice());
+    ThreadRng::default().fill(data.as_mut_slice());
     data
 }