diff --git a/Cargo.lock b/Cargo.lock
index d7c93e8..6e0fde9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1131,27 +1131,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
 [[package]]
-name = "proc-macro-error"
-version = "1.0.4"
+name = "proc-macro-error-attr2"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+checksum = "96de42df36bb9bba5542fe9f1a054b8cc87e172759a1868aa05c1f3acc89dfc5"
 dependencies = [
- "proc-macro-error-attr",
  "proc-macro2",
  "quote",
- "syn 1.0.109",
- "version_check",
 ]
 
 [[package]]
-name = "proc-macro-error-attr"
-version = "1.0.4"
+name = "proc-macro-error2"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+checksum = "11ec05c52be0a07b08061f7dd003e7d7092e0472bc731b4af7bb1ef876109802"
 dependencies = [
+ "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "version_check",
+ "syn 2.0.85",
 ]
 
 [[package]]
@@ -1180,14 +1178,14 @@ checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 
 [[package]]
 name = "rtic"
-version = "2.1.1"
+version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c443db16326376bdd64377da268f6616d5f804aba8ce799bac7d1f7f244e9d51"
+checksum = "401961431a1e491124cdd216a313fada2d395aa2b5bee2867c872fc8af7c1bc1"
 dependencies = [
- "atomic-polyfill",
  "bare-metal 1.0.0",
  "cortex-m",
  "critical-section",
+ "portable-atomic",
  "rtic-core",
  "rtic-macros",
 ]
@@ -1209,12 +1207,12 @@ checksum = "d9369355b04d06a3780ec0f51ea2d225624db777acbc60abd8ca4832da5c1a42"
 
 [[package]]
 name = "rtic-macros"
-version = "2.1.0"
+version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54053598ea24b1b74937724e366558412a1777eb2680b91ef646db540982789a"
+checksum = "ac22ab522d80079b48f46ac66ded4d349e1adf81b52430d6a74faa3a7790ed80"
 dependencies = [
  "indexmap",
- "proc-macro-error",
+ "proc-macro-error2",
  "proc-macro2",
  "quote",
  "syn 2.0.85",
diff --git a/src/hardware/external_mac.rs b/src/hardware/external_mac.rs
index b9500ca..97df944 100644
--- a/src/hardware/external_mac.rs
+++ b/src/hardware/external_mac.rs
@@ -74,7 +74,7 @@ pub struct TxToken<'a> {
     mac: &'a mut Mac,
 }
 
-impl<'a> smoltcp::phy::TxToken for TxToken<'a> {
+impl smoltcp::phy::TxToken for TxToken<'_> {
     fn consume<R, F>(self, len: usize, f: F) -> R
     where
         F: FnOnce(&mut [u8]) -> R,