diff --git a/codes.json b/codes.json
index 1333ed1..f0e23bc 100644
--- a/codes.json
+++ b/codes.json
@@ -3,6 +3,7 @@
   "101": "Switching Protocols",
   "102": "Processing",
   "103": "Early Hints",
+  "104": "Upload Resumption Supported (TEMPORARY - registered 2024-11-13, expires 2025-11-13)",
   "200": "OK",
   "201": "Created",
   "202": "Accepted",
@@ -34,14 +35,14 @@
   "410": "Gone",
   "411": "Length Required",
   "412": "Precondition Failed",
-  "413": "Payload Too Large",
+  "413": "Content Too Large",
   "414": "URI Too Long",
   "415": "Unsupported Media Type",
   "416": "Range Not Satisfiable",
   "417": "Expectation Failed",
-  "418": "I'm a Teapot",
+  "418": "(Unused)",
   "421": "Misdirected Request",
-  "422": "Unprocessable Entity",
+  "422": "Unprocessable Content",
   "423": "Locked",
   "424": "Failed Dependency",
   "425": "Too Early",
@@ -60,6 +61,6 @@
   "507": "Insufficient Storage",
   "508": "Loop Detected",
   "509": "Bandwidth Limit Exceeded",
-  "510": "Not Extended",
+  "510": "Not Extended (OBSOLETED)",
   "511": "Network Authentication Required"
 }
diff --git a/src/iana.json b/src/iana.json
index 4e69453..994cbf9 100644
--- a/src/iana.json
+++ b/src/iana.json
@@ -3,6 +3,7 @@
   "101": "Switching Protocols",
   "102": "Processing",
   "103": "Early Hints",
+  "104": "Upload Resumption Supported (TEMPORARY - registered 2024-11-13, expires 2025-11-13)",
   "200": "OK",
   "201": "Created",
   "202": "Accepted",
@@ -34,13 +35,14 @@
   "410": "Gone",
   "411": "Length Required",
   "412": "Precondition Failed",
-  "413": "Payload Too Large",
+  "413": "Content Too Large",
   "414": "URI Too Long",
   "415": "Unsupported Media Type",
   "416": "Range Not Satisfiable",
   "417": "Expectation Failed",
+  "418": "(Unused)",
   "421": "Misdirected Request",
-  "422": "Unprocessable Entity",
+  "422": "Unprocessable Content",
   "423": "Locked",
   "424": "Failed Dependency",
   "425": "Too Early",
@@ -58,6 +60,6 @@
   "506": "Variant Also Negotiates",
   "507": "Insufficient Storage",
   "508": "Loop Detected",
-  "510": "Not Extended",
+  "510": "Not Extended (OBSOLETED)",
   "511": "Network Authentication Required"
 }