diff --git a/Cargo.toml b/Cargo.toml
index e81e9881..387660f9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ repository = "https://github.com/dalek-cryptography/bulletproofs"
 categories = ["cryptography"]
 keywords = ["cryptography", "crypto", "ristretto", "zero-knowledge", "bulletproofs"]
 description = "A pure-Rust implementation of Bulletproofs using Ristretto"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 curve25519-dalek = { version = "3", default-features = false, features = ["u64_backend", "serde"] }
diff --git a/src/inner_product_proof.rs b/src/inner_product_proof.rs
index bcc56588..be2da34a 100644
--- a/src/inner_product_proof.rs
+++ b/src/inner_product_proof.rs
@@ -334,6 +334,7 @@ impl InnerProductProof {
         (self.L_vec.len() * 2 + 2) * 32
     }
 
+    #[allow(dead_code)]
     /// Serializes the proof into a byte array of \\(2n+2\\) 32-byte elements.
     /// The layout of the inner product proof is:
     /// * \\(n\\) pairs of compressed Ristretto points \\(L_0, R_0 \dots, L_{n-1}, R_{n-1}\\),
diff --git a/tests/r1cs.rs b/tests/r1cs.rs
index d34775a0..97910b2b 100644
--- a/tests/r1cs.rs
+++ b/tests/r1cs.rs
@@ -257,7 +257,7 @@ fn example_gadget_proof(
     // 2. Commit high-level variables
     let (commitments, vars): (Vec<_>, Vec<_>) = [a1, a2, b1, b2, c1]
         .into_iter()
-        .map(|x| prover.commit(Scalar::from(*x), Scalar::random(&mut thread_rng())))
+        .map(|x| prover.commit(Scalar::from(x), Scalar::random(&mut thread_rng())))
         .unzip();
 
     // 3. Build a CS