diff --git a/composer.json b/composer.json
index b3ddec127cde2585338ad6097e5bc6e6dd0af7ce..3d48edead3e064e09cf801584358e6b0d209a4bc 100644
--- a/composer.json
+++ b/composer.json
@@ -112,7 +112,7 @@
         "wpackagist-plugin/event-organiser": "3.12.8",
         "noblogs/ai-authenticate-rest-api-plugin": "0.0.4",
         "wpackagist-plugin/multisite-custom-css": "1.0",
-        "wpackagist-plugin/activitypub": "4.2.1",
+        "wpackagist-plugin/activitypub": "4.3.0",
         "wpackagist-plugin/gallery-block-lightbox": "1.15",
         "wpackagist-plugin/unconfirmed": "1.3.7",
         "noblogs/wp-mat": "0.1.4",
diff --git a/composer.lock b/composer.lock
index 76323ea6d9a05db26d81737742d39fac94318aaa..32780cfaaca743f608f35939627259c550440330 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "8bcefb5b7353d87847d69bd1c8de6817",
+    "content-hash": "e7afb2ccfc660a50658cf373e32ca2da",
     "packages": [
         {
             "name": "composer/installers",
@@ -892,15 +892,15 @@
         },
         {
             "name": "wpackagist-plugin/activitypub",
-            "version": "4.2.1",
+            "version": "4.3.0",
             "source": {
                 "type": "svn",
                 "url": "https://plugins.svn.wordpress.org/activitypub/",
-                "reference": "tags/4.2.1"
+                "reference": "tags/4.3.0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/plugin/activitypub.4.2.1.zip"
+                "url": "https://downloads.wordpress.org/plugin/activitypub.4.3.0.zip"
             },
             "require": {
                 "composer/installers": "^1.0 || ^2.0"