diff --git a/composer.json b/composer.json
index a06a0a062127b07b81cf6a930a2046210a8e228c..9d00e3157c4a2548e0d6dc56ce4c863c0740310b 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": "4.7.2",
+        "wpackagist-plugin/activitypub": "4.7.3",
         "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 d8688c3af38ba63d1f6e4776189591bc259103c5..d21b9be60ebdfe05a8fdad9b3cc8f2ac623d81e3 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": "38271320ecbace59a25987148fa13639",
+    "content-hash": "7ea443a7f581c40c0738f06371c8a4c5",
     "packages": [
         {
             "name": "composer/installers",
@@ -892,15 +892,15 @@
         },
         {
             "name": "wpackagist-plugin/activitypub",
-            "version": "4.7.2",
+            "version": "4.7.3",
             "source": {
                 "type": "svn",
                 "url": "https://plugins.svn.wordpress.org/activitypub/",
-                "reference": "tags/4.7.2"
+                "reference": "tags/4.7.3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/plugin/activitypub.4.7.2.zip"
+                "url": "https://downloads.wordpress.org/plugin/activitypub.4.7.3.zip"
             },
             "require": {
                 "composer/installers": "^1.0 || ^2.0"