diff --git a/apkverify/src/sigutil.rs b/apkverify/src/sigutil.rs
index 564831f..43fbe67 100644
--- a/apkverify/src/sigutil.rs
+++ b/apkverify/src/sigutil.rs
@@ -128,19 +128,19 @@
 }
 
 pub fn is_supported_signature_algorithm(algorithm_id: u32) -> bool {
-    match algorithm_id {
+    matches!(
+        algorithm_id,
         SIGNATURE_RSA_PSS_WITH_SHA256
-        | SIGNATURE_RSA_PSS_WITH_SHA512
-        | SIGNATURE_RSA_PKCS1_V1_5_WITH_SHA256
-        | SIGNATURE_RSA_PKCS1_V1_5_WITH_SHA512
-        | SIGNATURE_ECDSA_WITH_SHA256
-        | SIGNATURE_ECDSA_WITH_SHA512
-        | SIGNATURE_DSA_WITH_SHA256
-        | SIGNATURE_VERITY_RSA_PKCS1_V1_5_WITH_SHA256
-        | SIGNATURE_VERITY_ECDSA_WITH_SHA256
-        | SIGNATURE_VERITY_DSA_WITH_SHA256 => true,
-        _ => false,
-    }
+            | SIGNATURE_RSA_PSS_WITH_SHA512
+            | SIGNATURE_RSA_PKCS1_V1_5_WITH_SHA256
+            | SIGNATURE_RSA_PKCS1_V1_5_WITH_SHA512
+            | SIGNATURE_ECDSA_WITH_SHA256
+            | SIGNATURE_ECDSA_WITH_SHA512
+            | SIGNATURE_DSA_WITH_SHA256
+            | SIGNATURE_VERITY_RSA_PKCS1_V1_5_WITH_SHA256
+            | SIGNATURE_VERITY_ECDSA_WITH_SHA256
+            | SIGNATURE_VERITY_DSA_WITH_SHA256
+    )
 }
 
 fn to_content_digest_algorithm(algorithm_id: u32) -> Result<u32> {
diff --git a/apkverify/src/v3.rs b/apkverify/src/v3.rs
index 0a292df..1bf8a61 100644
--- a/apkverify/src/v3.rs
+++ b/apkverify/src/v3.rs
@@ -16,6 +16,9 @@
 
 //! Verifies APK Signature Scheme V3
 
+// TODO(jooyung) remove this
+#![allow(dead_code)]
+
 use anyhow::{anyhow, bail, Result};
 use bytes::Bytes;
 use std::fs::File;