diff --git a/wp-includes/js/api-request.js b/wp-includes/js/api-request.js
index 51df7f6f64..885e5b47f8 100644
--- a/wp-includes/js/api-request.js
+++ b/wp-includes/js/api-request.js
@@ -9,6 +9,7 @@
  * - Allows specifying only an endpoint namespace/path instead of a full URL.
  *
  * @since 4.9.0
+ * @since 5.6.0 Added overriding of the "PUT" and "DELETE" methods with "POST".
  * @output wp-includes/js/api-request.js
  */
 
@@ -23,6 +24,7 @@
 	apiRequest.buildAjaxOptions = function( options ) {
 		var url = options.url;
 		var path = options.path;
+		var method = options.method;
 		var namespaceTrimmed, endpointTrimmed, apiRoot;
 		var headers, addNonceHeader, headerName;
 
@@ -76,10 +78,23 @@
 			}, headers );
 		}
 
+		if ( typeof method === 'string' ) {
+			method = method.toUpperCase();
+
+			if ( 'PUT' === method || 'DELETE' === method ) {
+				headers = $.extend( {
+					'X-HTTP-Method-Override': method
+				}, headers );
+
+				method = 'POST';
+			}
+		}
+
 		// Do not mutate the original options object.
 		options = $.extend( {}, options, {
 			headers: headers,
-			url: url
+			url: url,
+			method: method
 		} );
 
 		delete options.path;
diff --git a/wp-includes/js/api-request.min.js b/wp-includes/js/api-request.min.js
index c0c0572bff..63b9c9c2fe 100644
--- a/wp-includes/js/api-request.min.js
+++ b/wp-includes/js/api-request.min.js
@@ -1,2 +1,2 @@
 /*! This file is auto-generated */
-!function(s){var w=window.wpApiSettings;function n(e){return e=n.buildAjaxOptions(e),n.transport(e)}n.buildAjaxOptions=function(e){var n,t,a,p,r,o,i=e.url,d=e.path;if("string"==typeof e.namespace&&"string"==typeof e.endpoint&&(n=e.namespace.replace(/^\/|\/$/g,""),d=(t=e.endpoint.replace(/^\//,""))?n+"/"+t:n),"string"==typeof d&&(a=w.root,d=d.replace(/^\//,""),"string"==typeof a&&-1!==a.indexOf("?")&&(d=d.replace("?","&")),i=a+d),r=!(e.data&&e.data._wpnonce),p=e.headers||{},r)for(o in p)if(p.hasOwnProperty(o)&&"x-wp-nonce"===o.toLowerCase()){r=!1;break}return r&&(p=s.extend({"X-WP-Nonce":w.nonce},p)),delete(e=s.extend({},e,{headers:p,url:i})).path,delete e.namespace,delete e.endpoint,e},n.transport=s.ajax,window.wp=window.wp||{},window.wp.apiRequest=n}(jQuery);
\ No newline at end of file
+!function(w){var c=window.wpApiSettings;function n(e){return e=n.buildAjaxOptions(e),n.transport(e)}n.buildAjaxOptions=function(e){var n,t,o,r,p,a,i=e.url,d=e.path,s=e.method;if("string"==typeof e.namespace&&"string"==typeof e.endpoint&&(n=e.namespace.replace(/^\/|\/$/g,""),d=(t=e.endpoint.replace(/^\//,""))?n+"/"+t:n),"string"==typeof d&&(o=c.root,d=d.replace(/^\//,""),"string"==typeof o&&-1!==o.indexOf("?")&&(d=d.replace("?","&")),i=o+d),p=!(e.data&&e.data._wpnonce),r=e.headers||{},p)for(a in r)if(r.hasOwnProperty(a)&&"x-wp-nonce"===a.toLowerCase()){p=!1;break}return p&&(r=w.extend({"X-WP-Nonce":c.nonce},r)),"string"==typeof s&&("PUT"!==(s=s.toUpperCase())&&"DELETE"!==s||(r=w.extend({"X-HTTP-Method-Override":s},r),s="POST")),delete(e=w.extend({},e,{headers:r,url:i,method:s})).path,delete e.namespace,delete e.endpoint,e},n.transport=w.ajax,window.wp=window.wp||{},window.wp.apiRequest=n}(jQuery);
\ No newline at end of file
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 6546bd93da..fd9b782436 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-49132';
+$wp_version = '5.6-alpha-49133';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.