diff --git a/wp-includes/IXR/class-IXR-introspectionserver.php b/wp-includes/IXR/class-IXR-introspectionserver.php
index 5628d81caa..afb05b0e0d 100644
--- a/wp-includes/IXR/class-IXR-introspectionserver.php
+++ b/wp-includes/IXR/class-IXR-introspectionserver.php
@@ -19,7 +19,7 @@ class IXR_IntrospectionServer extends IXR_Server
         $this->setCallbacks();
         $this->setCapabilities();
         $this->capabilities['introspection'] = array(
-            'specUrl' => 'http://xmlrpc.usefulinc.com/doc/reserved.html',
+            'specUrl' => 'https://web.archive.org/web/20050404090342/http://xmlrpc.usefulinc.com/doc/reserved.html',
             'specVersion' => 1
         );
         $this->addCallback(
diff --git a/wp-includes/IXR/class-IXR-server.php b/wp-includes/IXR/class-IXR-server.php
index 2ca657b2d4..e329602910 100644
--- a/wp-includes/IXR/class-IXR-server.php
+++ b/wp-includes/IXR/class-IXR-server.php
@@ -161,15 +161,15 @@ EOD;
         // Initialises capabilities array
         $this->capabilities = array(
             'xmlrpc' => array(
-                'specUrl' => 'http://www.xmlrpc.com/spec',
+                'specUrl' => 'https://xmlrpc.com/spec.md',
                 'specVersion' => 1
         ),
             'faults_interop' => array(
-                'specUrl' => 'http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php',
+                'specUrl' => 'https://web.archive.org/web/20240416231938/https://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php',
                 'specVersion' => 20010516
         ),
             'system.multicall' => array(
-                'specUrl' => 'http://www.xmlrpc.com/discuss/msgReader$1208',
+                'specUrl' => 'https://web.archive.org/web/20060624230303/http://www.xmlrpc.com/discuss/msgReader$1208?mode=topic',
                 'specVersion' => 1
         ),
         );
diff --git a/wp-includes/class-wp-xmlrpc-server.php b/wp-includes/class-wp-xmlrpc-server.php
index 3b50d393de..7c1e101e1e 100644
--- a/wp-includes/class-wp-xmlrpc-server.php
+++ b/wp-includes/class-wp-xmlrpc-server.php
@@ -6544,7 +6544,7 @@ class wp_xmlrpc_server extends IXR_Server {
 
 	/*
 	 * MovableType API functions.
-	 * Specs archive on http://web.archive.org/web/20050220091302/http://www.movabletype.org:80/docs/mtmanual_programmatic.html
+	 * Specs archive on https://web.archive.org/web/20050220091302/http://www.movabletype.org/docs/mtmanual_programmatic.html
 	 */
 
 	/**
diff --git a/wp-includes/version.php b/wp-includes/version.php
index bb491dc0fe..2044e37136 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.9-alpha-60654';
+$wp_version = '6.9-alpha-60655';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.