diff --git a/halo2_gadgets/src/utilities.rs b/halo2_gadgets/src/utilities.rs
index 97dd323c58..50d939b055 100644
--- a/halo2_gadgets/src/utilities.rs
+++ b/halo2_gadgets/src/utilities.rs
@@ -339,7 +339,6 @@ mod tests {
 
     #[allow(clippy::assign_op_pattern)]
     #[allow(clippy::ptr_offset_with_cast)]
-    #[allow(clippy::single_range_in_vec_init)]
     #[test]
     fn test_bitrange_subset() {
         let rng = OsRng;
diff --git a/halo2_proofs/benches/commit_zk.rs b/halo2_proofs/benches/commit_zk.rs
index bdf5c88a51..a6a33a934b 100644
--- a/halo2_proofs/benches/commit_zk.rs
+++ b/halo2_proofs/benches/commit_zk.rs
@@ -29,7 +29,7 @@ fn rand_poly_serial(mut rng: ChaCha20Rng, domain: usize) -> Vec<Scalar> {
 
 fn rand_poly_par(mut rng: ChaCha20Rng, domain: usize) -> Vec<Scalar> {
     // Sample a random polynomial of degree n - 1
-    let n = 1usize << domain as usize;
+    let n = 1usize << domain;
     let mut random_poly = vec![Scalar::ZERO; n];
 
     let num_threads = current_num_threads();
diff --git a/halo2_proofs/tests/plonk_api.rs b/halo2_proofs/tests/plonk_api.rs
index 039824f9d3..307dbdfef0 100644
--- a/halo2_proofs/tests/plonk_api.rs
+++ b/halo2_proofs/tests/plonk_api.rs
@@ -589,7 +589,6 @@ fn plonk_api() {
         >(verifier_params, pk.get_vk(), &proof[..]);
     }
 
-    #[allow(clippy::needless_raw_string_hashes)]
     fn test_plonk_api_ipa() {
         use halo2_proofs::poly::ipa::commitment::{IPACommitmentScheme, ParamsIPA};
         use halo2_proofs::poly::ipa::multiopen::{ProverIPA, VerifierIPA};