diff --git a/src/core/authorization_request/parameters.rs b/src/core/authorization_request/parameters.rs
index bd12fe1..0551291 100644
--- a/src/core/authorization_request/parameters.rs
+++ b/src/core/authorization_request/parameters.rs
@@ -94,7 +94,7 @@ impl fmt::Display for ClientIdScheme {
             ClientIdScheme::EntityId => ENTITY_ID,
             ClientIdScheme::PreRegistered => PREREGISTERED,
             ClientIdScheme::RedirectUri => REDIRECT_URI,
-            ClientIdScheme::VerifierAttestation => VERIFIER_ATTESTATION.into(),
+            ClientIdScheme::VerifierAttestation => VERIFIER_ATTESTATION,
             ClientIdScheme::X509SanDns => X509_SAN_DNS,
             ClientIdScheme::X509SanUri => X509_SAN_URI,
             ClientIdScheme::Other(o) => o,
diff --git a/src/core/authorization_request/verification/x509_san.rs b/src/core/authorization_request/verification/x509_san.rs
index 07df646..ffff434 100644
--- a/src/core/authorization_request/verification/x509_san.rs
+++ b/src/core/authorization_request/verification/x509_san.rs
@@ -58,7 +58,7 @@ pub fn validate<V: Verifier>(
         bail!("'x5c' header was not an array")
     };
 
-    let Json::String(b64_x509) = x5chain.get(0).context("'x5c' was an empty array")? else {
+    let Json::String(b64_x509) = x5chain.first().context("'x5c' was an empty array")? else {
         bail!("'x5c' header was not an array of strings");
     };
 
diff --git a/src/core/metadata/parameters/wallet.rs b/src/core/metadata/parameters/wallet.rs
index 27ef948..3454a01 100644
--- a/src/core/metadata/parameters/wallet.rs
+++ b/src/core/metadata/parameters/wallet.rs
@@ -250,7 +250,7 @@ mod test {
 
     #[test]
     fn response_types_supported() {
-        let exp = vec![ResponseType::VpToken];
+        let exp = [ResponseType::VpToken];
         let ResponseTypesSupported(v) = metadata().get().unwrap().unwrap();
         assert!(exp.iter().all(|x| v.contains(x)));
         assert!(v.iter().all(|x| exp.contains(x)));
@@ -258,7 +258,7 @@ mod test {
 
     #[test]
     fn client_id_schemes_supported() {
-        let exp = vec![ClientIdScheme::RedirectUri, ClientIdScheme::X509SanUri];
+        let exp = [ClientIdScheme::RedirectUri, ClientIdScheme::X509SanUri];
         let ClientIdSchemesSupported(v) = metadata().get().unwrap().unwrap();
         assert!(exp.iter().all(|x| v.contains(x)));
         assert!(v.iter().all(|x| exp.contains(x)));
@@ -266,7 +266,7 @@ mod test {
 
     #[test]
     fn request_object_signing_alg_values_supported() {
-        let exp = vec!["ES256".to_string()];
+        let exp = ["ES256".to_string()];
         let RequestObjectSigningAlgValuesSupported(v) = metadata().get().unwrap().unwrap();
         assert!(exp.iter().all(|x| v.contains(x)));
         assert!(v.iter().all(|x| exp.contains(x)));
@@ -284,7 +284,7 @@ mod test {
 
     #[test]
     fn authorization_encryption_alg_values_supported() {
-        let exp = vec!["ECDH-ES".to_string()];
+        let exp = ["ECDH-ES".to_string()];
         let AuthorizationEncryptionAlgValuesSupported(v) = metadata().get().unwrap().unwrap();
         assert!(exp.iter().all(|x| v.contains(x)));
         assert!(v.iter().all(|x| exp.contains(x)));
@@ -292,7 +292,7 @@ mod test {
 
     #[test]
     fn authorization_encryption_enc_values_supported() {
-        let exp = vec!["A256GCM".to_string()];
+        let exp = ["A256GCM".to_string()];
         let AuthorizationEncryptionEncValuesSupported(v) = metadata().get().unwrap().unwrap();
         assert!(exp.iter().all(|x| v.contains(x)));
         assert!(v.iter().all(|x| exp.contains(x)));
diff --git a/src/core/response/mod.rs b/src/core/response/mod.rs
index 4971321..30fff9a 100644
--- a/src/core/response/mod.rs
+++ b/src/core/response/mod.rs
@@ -19,11 +19,11 @@ pub enum AuthorizationResponse {
 
 impl AuthorizationResponse {
     pub fn from_x_www_form_urlencoded(bytes: &[u8]) -> Result<Self> {
-        if let Ok(jwt) = serde_urlencoded::from_bytes(&bytes) {
+        if let Ok(jwt) = serde_urlencoded::from_bytes(bytes) {
             return Ok(Self::Jwt(jwt));
         }
 
-        let flattened = serde_urlencoded::from_bytes::<BTreeMap<String, String>>(&bytes)
+        let flattened = serde_urlencoded::from_bytes::<BTreeMap<String, String>>(bytes)
             .context("failed to construct flat map")?;
         let map = flattened
             .into_iter()
@@ -33,7 +33,7 @@ impl AuthorizationResponse {
             })
             .collect();
 
-        return Ok(Self::Unencoded(UntypedObject(map).try_into()?));
+        Ok(Self::Unencoded(UntypedObject(map).try_into()?))
     }
 }
 
diff --git a/src/verifier/mod.rs b/src/verifier/mod.rs
index 812bf97..d179856 100644
--- a/src/verifier/mod.rs
+++ b/src/verifier/mod.rs
@@ -37,7 +37,7 @@ impl Verifier {
     }
 
     /// Begin building a new authorization request (credential presentation).
-    pub fn build_authorization_request<'a>(&'a self) -> RequestBuilder<'a> {
+    pub fn build_authorization_request(&self) -> RequestBuilder<'_> {
         RequestBuilder::new(self)
     }
 
diff --git a/src/verifier/session.rs b/src/verifier/session.rs
index beb50af..0380b95 100644
--- a/src/verifier/session.rs
+++ b/src/verifier/session.rs
@@ -92,7 +92,7 @@ impl SessionStore for MemoryStore {
     }
 
     async fn remove_session(&self, uuid: Uuid) -> Result<()> {
-        if let Some(_) = self.store.try_lock()?.remove(&uuid) {
+        if self.store.try_lock()?.remove(&uuid).is_some() {
             return Ok(());
         }
 
diff --git a/tests/jwt_vc.rs b/tests/jwt_vc.rs
index 4fb705f..99c4ef9 100644
--- a/tests/jwt_vc.rs
+++ b/tests/jwt_vc.rs
@@ -127,7 +127,7 @@ impl RequestVerifier for JwtVcWallet {
     ) -> Result<()> {
         did::verify_with_resolver(
             self.metadata(),
-            &decoded_request,
+            decoded_request,
             request_jwt,
             Some(self.trusted_dids()),
             DIDKey.to_resolver(),