diff --git a/http_status_codes.php b/http_status_codes.php
index df479a5..b4ba446 100644
--- a/http_status_codes.php
+++ b/http_status_codes.php
@@ -3,6 +3,7 @@
     100 => 'Continue',
     101 => 'Switching Protocols',
     102 => 'Processing',
+    103 => 'Early Hints',
     200 => 'OK',
     201 => 'Created',
     202 => 'Accepted',
@@ -11,13 +12,17 @@
     205 => 'Reset Content',
     206 => 'Partial Content',
     207 => 'Multi-Status',
+    208 => 'Already Reported',
+    226 => 'IM Used',
     300 => 'Multiple Choices',
     301 => 'Moved Permanently',
     302 => 'Found',
     303 => 'See Other',
     304 => 'Not Modified',
     305 => 'Use Proxy',
+    306 => 'Unused',
     307 => 'Temporary Redirect',
+    308 => 'Permanent Redirect',
     400 => 'Bad Request',
     401 => 'Unauthorized',
     402 => 'Payment Required',
@@ -36,9 +41,14 @@
     415 => 'Unsupported Media Type',
     416 => 'Requested Range Not Satisfiable',
     417 => 'Expectation Failed',
+    418 => 'I\'m a teapot',
+    421 => 'Misdirected Request',
     422 => 'Unprocessable Entity',
     423 => 'Locked',
     424 => 'Failed Dependency',
+    425 => 'Too Early',
+    428 => 'Precondition Required',
+    429 => 'Too Many Requests',
     426 => 'Upgrade Required',
     500 => 'Internal Server Error',
     501 => 'Not Implemented',
@@ -49,5 +59,6 @@
     506 => 'Variant Also Negotiates',
     507 => 'Insufficient Storage',
     509 => 'Bandwidth Limit Exceeded',
-    510 => 'Not Extended'
+    510 => 'Not Extended',
+    511 => 'Network Authentication Required'
 );