diff --git a/ext/curl/curl.stub.php b/ext/curl/curl.stub.php
index 5dac22ae7952c..7428ecf3fd83a 100644
--- a/ext/curl/curl.stub.php
+++ b/ext/curl/curl.stub.php
@@ -3332,6 +3332,13 @@
  * @cvalue CURLOPT_SSL_EC_CURVES
  */
 const CURLOPT_SSL_EC_CURVES = UNKNOWN;
+#if LIBCURL_VERSION_NUM >= 0x080e00 /* Available since 8.14.0 */
+/**
+ * @var int
+ * @cvalue CURLOPT_SSL_SIGNATURE_ALGORITHMS
+ */
+const CURLOPT_SSL_SIGNATURE_ALGORITHMS = UNKNOWN;
+#endif
 /**
  * @var int
  * @cvalue CURLPX_BAD_ADDRESS_TYPE
diff --git a/ext/curl/curl_arginfo.h b/ext/curl/curl_arginfo.h
index 75be3b75c4983..a1242b32afc54 100644
--- a/ext/curl/curl_arginfo.h
+++ b/ext/curl/curl_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 533884c442ca1146a61c0824a4f8c9628c31aae3 */
+ * Stub hash: dcb11ef0974b5480ca9cb2e05fd3b9a72a355e4e */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_curl_close, 0, 1, IS_VOID, 0)
 	ZEND_ARG_OBJ_INFO(0, handle, CurlHandle, 0)
@@ -888,6 +888,11 @@ static void register_curl_symbols(int module_number)
 	REGISTER_LONG_CONSTANT("CURLE_PROXY", CURLE_PROXY, CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("CURLINFO_PROXY_ERROR", CURLINFO_PROXY_ERROR, CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("CURLOPT_SSL_EC_CURVES", CURLOPT_SSL_EC_CURVES, CONST_PERSISTENT);
+#endif
+#if LIBCURL_VERSION_NUM >= 0x074900 /* Available since 7.73.0 */ && LIBCURL_VERSION_NUM >= 0x080e00 /* Available since 8.14.0 */
+	REGISTER_LONG_CONSTANT("CURLOPT_SSL_SIGNATURE_ALGORITHMS", CURLOPT_SSL_SIGNATURE_ALGORITHMS, CONST_PERSISTENT);
+#endif
+#if LIBCURL_VERSION_NUM >= 0x074900 /* Available since 7.73.0 */
 	REGISTER_LONG_CONSTANT("CURLPX_BAD_ADDRESS_TYPE", CURLPX_BAD_ADDRESS_TYPE, CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("CURLPX_BAD_VERSION", CURLPX_BAD_VERSION, CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("CURLPX_CLOSED", CURLPX_CLOSED, CONST_PERSISTENT);
diff --git a/ext/curl/interface.c b/ext/curl/interface.c
index ffb7889c748b2..d3f681185ab0b 100644
--- a/ext/curl/interface.c
+++ b/ext/curl/interface.c
@@ -1944,6 +1944,9 @@ static zend_result _php_curl_setopt(php_curl *ch, zend_long option, zval *zvalue
 		case CURLOPT_USERPWD:
 		case CURLOPT_USERNAME:
 		case CURLOPT_PASSWORD:
+#if LIBCURL_VERSION_NUM >= 0x080e00 /* Available since 8.14.0 */
+		case CURLOPT_SSL_SIGNATURE_ALGORITHMS:
+#endif
 		{
 			if (Z_ISNULL_P(zvalue)) {
 				error = curl_easy_setopt(ch->cp, option, NULL);
diff --git a/ext/curl/tests/Caddyfile b/ext/curl/tests/Caddyfile
index ceba97ee93971..f6f4279af8949 100644
--- a/ext/curl/tests/Caddyfile
+++ b/ext/curl/tests/Caddyfile
@@ -21,3 +21,8 @@ basic_auth /http-basic-auth {
 	# bcrypt password hash for "password", calculated with 'caddy hash-password'
 	user $2a$14$yUKl9SGqVTAAqPTzLup.DefsbXXx3kfreNnzpJOUHcIrKnr5lgef2
 }
+
+route /ping {
+	templates
+	respond `pong`
+}
diff --git a/ext/curl/tests/curl_setopt_CURLOPT_SSL_SIGNATURE_ALGORITHMS.phpt b/ext/curl/tests/curl_setopt_CURLOPT_SSL_SIGNATURE_ALGORITHMS.phpt
new file mode 100644
index 0000000000000..73b4abc85bd4d
--- /dev/null
+++ b/ext/curl/tests/curl_setopt_CURLOPT_SSL_SIGNATURE_ALGORITHMS.phpt
@@ -0,0 +1,40 @@
+--TEST--
+Curl option CURLOPT_SSL_SIGNATURE_ALGORITHMS
+--EXTENSIONS--
+curl
+--SKIPIF--
+<?php
+$curl_version = curl_version();
+if ($curl_version['version_number'] < 0x080e00) die("skip: test works only with curl >= 8.14.0");
+
+include 'skipif-nocaddy.inc';
+?>
+--FILE--
+<?php
+
+$ch = curl_init('https://localhost/ping');
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
+
+var_dump(curl_exec($ch));
+
+var_dump(curl_setopt($ch, CURLOPT_SSL_SIGNATURE_ALGORITHMS, 'invalid-value'));
+var_dump(curl_exec($ch));
+var_dump(curl_error($ch));
+
+var_dump(curl_setopt($ch, CURLOPT_SSL_SIGNATURE_ALGORITHMS, 'ECDSA+SHA256:RSA+SHA256:DSA+SHA256:ed25519'));
+var_dump(curl_exec($ch));
+
+var_dump(curl_setopt($ch, CURLOPT_SSL_SIGNATURE_ALGORITHMS, null));
+var_dump(curl_exec($ch));
+
+?>
+--EXPECT--
+string(4) "pong"
+bool(true)
+bool(false)
+string(52) "failed setting signature algorithms: 'invalid-value'"
+bool(true)
+string(4) "pong"
+bool(true)
+string(4) "pong"