diff --git a/bazel/repository_locations.bzl b/bazel/repository_locations.bzl
index 0b871192ffb8..a61063095cd4 100644
--- a/bazel/repository_locations.bzl
+++ b/bazel/repository_locations.bzl
@@ -494,12 +494,12 @@ REPOSITORY_LOCATIONS_SPEC = dict(
         project_name = "llhttp",
         project_desc = "Parser for HTTP messages written in C",
         project_url = "https://github.com/nodejs/llhttp",
-        version = "4.0.0",
-        sha256 = "0b83fd2db4300e85b3a73763b4c2599998089722c2ab8507383e02517b274cb7",
+        version = "5.0.0",
+        sha256 = "1c575cf37c748fd0d67fd8ff9761c71ef28e7c1c3dc336c4e8a7f9787b34e470",
         strip_prefix = "llhttp-release-v{version}",
         urls = ["https://github.com/nodejs/llhttp/archive/release/v{version}.tar.gz"],
         use_category = ["dataplane_core"],
-        release_date = "2021-02-16",
+        release_date = "2021-04-03",
         cpe = "N/A",
     ),
     com_github_tencent_rapidjson = dict(
diff --git a/source/common/http/http1/parser_impl.cc b/source/common/http/http1/parser_impl.cc
index 0ec747669189..f9c567c0bac0 100644
--- a/source/common/http/http1/parser_impl.cc
+++ b/source/common/http/http1/parser_impl.cc
@@ -95,23 +95,23 @@ class HttpParserImpl::Impl {
   }
 
   RcVal execute(const char* slice, int len) {
-    llhttp_errno_t err;
+    llhttp_errno_t error;
     if (slice == nullptr || len == 0) {
-      err = llhttp_finish(&parser_);
+      error = llhttp_finish(&parser_);
     } else {
-      err = llhttp_execute(&parser_, slice, len);
+      error = llhttp_execute(&parser_, slice, len);
     }
     size_t nread = len;
     // Adjust number of bytes read in case of error.
-    if (err != HPE_OK) {
+    if (error != HPE_OK) {
       nread = llhttp_get_error_pos(&parser_) - slice;
       // Resume after upgrade.
-      if (err == HPE_PAUSED_UPGRADE) {
-        err = HPE_OK;
+      if (error == HPE_PAUSED_UPGRADE) {
+        error = HPE_OK;
         llhttp_resume_after_upgrade(&parser_);
       }
     }
-    return {nread, err};
+    return {nread, error};
   }
 
   void resume() { llhttp_resume(&parser_); }