diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 431f6d8..83574b3 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -104,7 +104,7 @@ jobs:
     - run: cargo update -Z minimal-versions
     # Now check that `cargo build` works with respect to the oldest possible
     # deps and the stated MSRV. 1.70 should work for all
-    - uses: dtolnay/rust-toolchain@1.75.0
+    - uses: dtolnay/rust-toolchain@1.77.0
     - run: cargo test --workspace --all-targets --all-features
     # Also make sure the AVX2 build works
     - run: cargo build --target x86_64-unknown-linux-gnu
diff --git a/crates/obfs4/src/handshake/handshake_server.rs b/crates/obfs4/src/handshake/handshake_server.rs
index d75222b..6de594a 100644
--- a/crates/obfs4/src/handshake/handshake_server.rs
+++ b/crates/obfs4/src/handshake/handshake_server.rs
@@ -20,21 +20,18 @@ pub(crate) struct HandshakeMaterials {
     pub(crate) len_seed: [u8; SEED_LENGTH],
 }
 
-impl<'a> HandshakeMaterials {
+impl HandshakeMaterials {
     pub fn get_hmac(&self) -> HmacSha256 {
         let mut key = self.identity_keys.pk.pk.as_bytes().to_vec();
         key.append(&mut self.identity_keys.pk.id.as_bytes().to_vec());
         HmacSha256::new_from_slice(&key[..]).unwrap()
     }
 
-    pub fn new<'b>(
-        identity_keys: &'b Obfs4NtorSecretKey,
+    pub fn new(
+        identity_keys: &Obfs4NtorSecretKey,
         session_id: String,
         len_seed: [u8; SEED_LENGTH],
-    ) -> Self
-    where
-        'b: 'a,
-    {
+    ) -> Self {
         HandshakeMaterials {
             identity_keys: identity_keys.clone(),
             session_id,
diff --git a/crates/obfs4/src/test_utils/fake_prng.rs b/crates/obfs4/src/test_utils/fake_prng.rs
index 916e889..fecdb70 100644
--- a/crates/obfs4/src/test_utils/fake_prng.rs
+++ b/crates/obfs4/src/test_utils/fake_prng.rs
@@ -6,7 +6,7 @@ impl<'a> FakePRNG<'a> {
         Self { bytes }
     }
 }
-impl<'a> rand_core::RngCore for FakePRNG<'a> {
+impl rand_core::RngCore for FakePRNG<'_> {
     fn next_u32(&mut self) -> u32 {
         rand_core::impls::next_u32_via_fill(self)
     }