diff --git a/Cargo.lock b/Cargo.lock
index e914dd6..77897e6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -182,6 +182,12 @@ version = "0.21.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
 
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -476,7 +482,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "322106e6bd0cba2d5ead589ddb8150a13d7c4217cf80d7c4f682ca994ccc6aa9"
 dependencies = [
- "base64",
+ "base64 0.21.7",
  "bytes",
  "headers-core",
  "http",
@@ -967,11 +973,11 @@ checksum = "7a66a03ae7c801facd77a29370b4faec201768915ac14a721ba36f20bc9c209b"
 
 [[package]]
 name = "registry-conformance"
-version = "0.5.2"
+version = "0.5.3"
 source = "sparse+https://integer32llc.github.io/registry-conformance/"
-checksum = "7bf0349976913b09e95602e5dcab7f99a6792c389404e972582a6bf387656b7a"
+checksum = "381a1dbfe46b6eb694d046f752b372662192b194ef2546ed2f9c4d62c5a76926"
 dependencies = [
- "base64",
+ "base64 0.22.1",
  "futures",
  "regex",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index eee2eb9..6a0415b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,7 +29,7 @@ lint_groups_priority = { level = "allow", priority = 1 } # Remove after 1.80. ht
 
 [workspace.dependencies]
 argh = { version = "0.1.12", default-features = false }
-registry-conformance = { version = "0.5.2", registry = "registry-conformance" }
+registry-conformance = { version = "0.5.3", registry = "registry-conformance" }
 snafu = { version = "0.8.2", default-features = false, features = ["rust_1_65", "std"] }
 tokio = { version = "1.37.0", default-features = false, features = ["macros", "process", "rt-multi-thread"] }
 
diff --git a/conformance/src/main.rs b/conformance/src/main.rs
index 3512198..e3272a6 100644
--- a/conformance/src/main.rs
+++ b/conformance/src/main.rs
@@ -116,9 +116,9 @@ async fn auth(
     next: Next,
 ) -> Result<Response, StatusCode> {
     if let Some((username, password)) = webserver_basic_auth {
-        let creds_match = auth_header.as_ref().map_or(false, |auth| {
-            auth.username() == username && auth.password() == password
-        });
+        let creds_match = auth_header
+            .as_ref()
+            .is_some_and(|auth| auth.username() == username && auth.password() == password);
 
         if !creds_match {
             return Err(StatusCode::UNAUTHORIZED);
diff --git a/src/main.rs b/src/main.rs
index e8fab05..471b74b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1357,9 +1357,9 @@ mod index_entry {
         /// The current values are:
         //
         /// * 1: The schema as documented here, not including newer additions.
-        ///      This is honored in Rust version 1.51 and newer.
+        ///   This is honored in Rust version 1.51 and newer.
         /// * 2: The addition of the `features2` field.
-        ///      This is honored in Rust version 1.60 and newer.
+        ///   This is honored in Rust version 1.60 and newer.
         pub v: u32,
 
         /// Features with new, extended syntax, such as namespaced