diff --git a/src/http/Status.cxx b/src/http/Status.cxx
index 99cac9697..5ec0ff473 100644
--- a/src/http/Status.cxx
+++ b/src/http/Status.cxx
@@ -10,6 +10,8 @@ static constexpr struct {
 } http_status_to_string_input[] = {
 	{ HttpStatus::CONTINUE, "100 Continue" },
 	{ HttpStatus::SWITCHING_PROTOCOLS, "101 Switching Protocols" },
+	{ HttpStatus::PROCESSING, "102 Processing"},
+	{ HttpStatus::EARLY_HINTS, "103 Early Hints"},
 	{ HttpStatus::OK, "200 OK" },
 	{ HttpStatus::CREATED, "201 Created" },
 	{ HttpStatus::ACCEPTED, "202 Accepted" },
@@ -19,6 +21,8 @@ static constexpr struct {
 	{ HttpStatus::RESET_CONTENT, "205 Reset Content" },
 	{ HttpStatus::PARTIAL_CONTENT, "206 Partial Content" },
 	{ HttpStatus::MULTI_STATUS, "207 Multi-Status" },
+	{ HttpStatus::ALREADY_REPORTED, "208 Already Reported"},
+	{ HttpStatus::IM_USED, "226 IM Used"},
 	{ HttpStatus::MULTIPLE_CHOICES, "300 Multiple Choices" },
 	{ HttpStatus::MOVED_PERMANENTLY, "301 Moved Permanently" },
 	{ HttpStatus::FOUND, "302 Found" },
@@ -26,6 +30,7 @@ static constexpr struct {
 	{ HttpStatus::NOT_MODIFIED, "304 Not Modified" },
 	{ HttpStatus::USE_PROXY, "305 Use Proxy" },
 	{ HttpStatus::TEMPORARY_REDIRECT, "307 Temporary Redirect" },
+	{ HttpStatus::PERMANENT_REDIRECT, "308 Permanent Redirect"},
 	{ HttpStatus::BAD_REQUEST, "400 Bad Request" },
 	{ HttpStatus::UNAUTHORIZED, "401 Unauthorized" },
 	{ HttpStatus::PAYMENT_REQUIRED, "402 Payment Required" },
@@ -48,9 +53,11 @@ static constexpr struct {
 	  "416 Requested Range Not Satisfiable" },
 	{ HttpStatus::EXPECTATION_FAILED, "417 Expectation failed" },
 	{ HttpStatus::I_M_A_TEAPOT, "418 I'm a teapot" },
+	{ HttpStatus::MISDIRECTED_REQUEST, "421 Misdirected Request"},
 	{ HttpStatus::UNPROCESSABLE_ENTITY, "422 Unprocessable Entity" },
 	{ HttpStatus::LOCKED, "423 Locked" },
 	{ HttpStatus::FAILED_DEPENDENCY, "424 Failed Dependency" },
+	{ HttpStatus::TOO_EARLY, "425 Too Early"},
 	{ HttpStatus::UPGRADE_REQUIRED, "426 Upgrade Required" },
 	{ HttpStatus::PRECONDITION_REQUIRED, "428 Precondition Required" },
 	{ HttpStatus::TOO_MANY_REQUESTS, "429 Too Many Requests" },
@@ -65,7 +72,10 @@ static constexpr struct {
 	{ HttpStatus::GATEWAY_TIMEOUT, "504 Gateway Timeout" },
 	{ HttpStatus::HTTP_VERSION_NOT_SUPPORTED,
 	  "505 HTTP Version Not Supported" },
+	{ HttpStatus::VARIANT_ALSO_NEGOTIATES, "506 Variant Also Negotiates" },
 	{ HttpStatus::INSUFFICIENT_STORAGE, "507 Insufficient Storage" },
+	{ HttpStatus::LOOP_DETECTED, "508 Loop Detected"},
+	{ HttpStatus::NOT_EXTENDED, "510 Not Extended"},
 	{ HttpStatus::NETWORK_AUTHENTICATION_REQUIRED,
 	  "511 Network Authentication Required" },
 };
diff --git a/src/http/Status.hxx b/src/http/Status.hxx
index 954fa98a1..8cf76beb4 100644
--- a/src/http/Status.hxx
+++ b/src/http/Status.hxx
@@ -19,6 +19,12 @@ enum class HttpStatus : uint_least16_t {
 	CONTINUE = 100,
 	SWITCHING_PROTOCOLS = 101,
 
+	// added in RFC 2518, removed in RFC 4918 (WebDAV)
+	PROCESSING = 102,
+
+	// added in RFC 2518, removed in RFC 4918 (WebDAV)
+	EARLY_HINTS = 103,
+
 	OK = 200,
 	CREATED = 201,
 	ACCEPTED = 202,
@@ -32,13 +38,24 @@ enum class HttpStatus : uint_least16_t {
 	 */
 	MULTI_STATUS = 207,
 
+	/**
+	 * @see RFC 5842 (Binding Extensiosn to WebDAV)
+	 */
+	ALREADY_REPORTED = 208,
+
+	/**
+	 * @see RFC 3229 (Delta Encoding in HTTP)
+	 */
+	IM_USED = 226,
+
 	MULTIPLE_CHOICES = 300,
 	MOVED_PERMANENTLY = 301,
 	FOUND = 302,
 	SEE_OTHER = 303,
 	NOT_MODIFIED = 304,
-	USE_PROXY = 305,
+	USE_PROXY = 305, // deprecated in RFC 7231
 	TEMPORARY_REDIRECT = 307,
+	PERMANENT_REDIRECT = 308, // RFC 9110 (HTTP Semantics)
 	BAD_REQUEST = 400,
 	UNAUTHORIZED = 401,
 	PAYMENT_REQUIRED = 402,
@@ -63,6 +80,11 @@ enum class HttpStatus : uint_least16_t {
 	 */
 	I_M_A_TEAPOT = 418,
 
+	/**
+	 * @see RFC 9110 (HTTP Semantics)
+	 */
+	MISDIRECTED_REQUEST = 421,
+
 	/**
 	 * @see RFC 4918 (WebDAV)
 	 */
@@ -78,6 +100,11 @@ enum class HttpStatus : uint_least16_t {
 	 */
 	FAILED_DEPENDENCY = 424,
 
+	/**
+	 * @see RFC 8470 (Using Early Data in HTTP)
+	 */
+	TOO_EARLY = 425,
+
 	/**
 	 * @see RFC 7231 (HTTP 1.1)
 	 */
@@ -110,11 +137,26 @@ enum class HttpStatus : uint_least16_t {
 	GATEWAY_TIMEOUT = 504,
 	HTTP_VERSION_NOT_SUPPORTED = 505,
 
+	/**
+	 * @see RFC 2295 (Transparent Content Negotiation in HTTP)
+	 */
+	VARIANT_ALSO_NEGOTIATES = 506,
+
 	/**
 	 * @see RFC 4918 (WebDAV)
 	 */
 	INSUFFICIENT_STORAGE = 507,
 
+	/**
+	 * @see RFC 5842 (Binding Extensions to WebDAV)
+	 */
+	LOOP_DETECTED = 508,
+
+	/**
+	 * @see RFC 2774 (An HTTP Extension Framework)
+	 */
+	NOT_EXTENDED = 510,
+
 	/**
 	 * @see RFC 6585 (Additional HTTP Status Codes)
 	 */