diff --git a/rpxy-lib/Cargo.toml b/rpxy-lib/Cargo.toml
index bd0e219..89c4868 100644
--- a/rpxy-lib/Cargo.toml
+++ b/rpxy-lib/Cargo.toml
@@ -64,9 +64,7 @@ hyper-tls = { version = "0.6.0", features = [
   "alpn",
   "vendored",
 ], optional = true }
-# TODO: Work around to enable rustls-platform-verifier feature: https://github.com/rustls/hyper-rustls/pull/276
-# hyper-rustls = { version = "0.27.2", default-features = false, features = [
-hyper-rustls = { git = "https://github.com/junkurihara/hyper-rustls", branch = "main", features = [
+hyper-rustls = { version = "0.27.3", default-features = false, features = [
   "aws-lc-rs",
   "http1",
   "http2",
diff --git a/rpxy-lib/src/message_handler/utils_headers.rs b/rpxy-lib/src/message_handler/utils_headers.rs
index 9be45e5..d058f88 100644
--- a/rpxy-lib/src/message_handler/utils_headers.rs
+++ b/rpxy-lib/src/message_handler/utils_headers.rs
@@ -30,16 +30,12 @@ pub(super) fn takeout_sticky_cookie_lb_context(
       let cookies_iter = entry
         .iter()
         .flat_map(|v| v.to_str().unwrap_or("").split(';').map(|v| v.trim()));
-      let (sticky_cookies, without_sticky_cookies): (Vec<_>, Vec<_>) = cookies_iter
-        .into_iter()
-        .partition(|v| v.starts_with(expected_cookie_name));
+      let (sticky_cookies, without_sticky_cookies): (Vec<_>, Vec<_>) =
+        cookies_iter.into_iter().partition(|v| v.starts_with(expected_cookie_name));
       if sticky_cookies.is_empty() {
         return Ok(None);
       }
-      ensure!(
-        sticky_cookies.len() == 1,
-        "Invalid cookie: Multiple sticky cookie values"
-      );
+      ensure!(sticky_cookies.len() == 1, "Invalid cookie: Multiple sticky cookie values");
 
       let cookies_passed_to_upstream = without_sticky_cookies.join("; ");
       let cookie_passed_to_lb = sticky_cookies.first().unwrap();
@@ -59,10 +55,7 @@ pub(super) fn takeout_sticky_cookie_lb_context(
 /// Set-Cookie if LB Sticky is enabled and if cookie is newly created/updated.
 /// Set-Cookie response header could be in multiple lines.
 /// https://developer.mozilla.org/ja/docs/Web/HTTP/Headers/Set-Cookie
-pub(super) fn set_sticky_cookie_lb_context(
-  headers: &mut HeaderMap,
-  context_from_lb: &LoadBalanceContext,
-) -> Result<()> {
+pub(super) fn set_sticky_cookie_lb_context(headers: &mut HeaderMap, context_from_lb: &LoadBalanceContext) -> Result<()> {
   let sticky_cookie_string: String = context_from_lb.sticky_cookie.clone().try_into()?;
   let new_header_val: HeaderValue = sticky_cookie_string.parse()?;
   let expected_cookie_name = &context_from_lb.sticky_cookie.value.name;
@@ -122,7 +115,7 @@ pub(super) fn apply_upstream_options_to_header(
         // add upgrade-insecure-requests in request header if not exist
         headers
           .entry(header::UPGRADE_INSECURE_REQUESTS)
-          .or_insert(HeaderValue::from_bytes(&[b'1']).unwrap());
+          .or_insert(HeaderValue::from_bytes(b"1").unwrap());
       }
       _ => (),
     }
@@ -141,7 +134,7 @@ pub(super) fn append_header_entry_with_comma(headers: &mut HeaderMap, key: &str,
       // entry.append(value.parse::<HeaderValue>()?);
       let mut new_value = Vec::<u8>::with_capacity(entry.get().as_bytes().len() + 2 + value.len());
       new_value.put_slice(entry.get().as_bytes());
-      new_value.put_slice(&[b',', b' ']);
+      new_value.put_slice(b", ");
       new_value.put_slice(value.as_bytes());
       entry.insert(HeaderValue::from_bytes(&new_value)?);
     }
diff --git a/rpxy-lib/src/message_handler/utils_request.rs b/rpxy-lib/src/message_handler/utils_request.rs
index 8939433..b60835f 100644
--- a/rpxy-lib/src/message_handler/utils_request.rs
+++ b/rpxy-lib/src/message_handler/utils_request.rs
@@ -16,7 +16,7 @@ impl<B> InspectParseHost for Request<B> {
   /// Inspect and extract hostname from either the request HOST header or request line
   fn inspect_parse_host(&self) -> Result<Vec<u8>> {
     let drop_port = |v: &[u8]| {
-      if v.starts_with(&[b'[']) {
+      if v.starts_with(b"[") {
         // v6 address with bracket case. if port is specified, always it is in this case.
         let mut iter = v.split(|ptr| ptr == &b'[' || ptr == &b']');
         iter.next().ok_or(anyhow!("Invalid Host header"))?; // first item is always blank