diff --git a/composer.json b/composer.json
index 224bf07313dde1f7e11d20fe5e2b2f31ba9346db..f2f5a83e79c6e15f8f6d78e1d8cc6655093cfb6a 100644
--- a/composer.json
+++ b/composer.json
@@ -130,7 +130,8 @@
         "wpackagist-plugin/two-factor-provider-webauthn": "2.0.1",
         "wpackagist-plugin/event-organiser": "3.12.1",
         "noblogs/ai-authenticate-rest-api-plugin": "0.0.1",
-        "wpackagist-plugin/multisite-custom-css": "1.0"
+        "wpackagist-plugin/multisite-custom-css": "1.0",
+        "wpackagist-plugin/activitypub": "^0.13.4"
     },    
     "extra": {
         "wordpress-install-dir": "app",
diff --git a/composer.lock b/composer.lock
index c91c14c0b15f2f55403d0ebb2b9e57725bc53900..bf36affe7bd855d3b3133d7d94d149d3b16b5fba 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": "62dadfa383329f6a0199868de91faf11",
+    "content-hash": "f0fc06fba3d9edc1b91b1b1f1a02e156",
     "packages": [
         {
             "name": "bjornjohansen/wplang",
@@ -828,6 +828,24 @@
             },
             "time": "2019-10-18T17:56:48+00:00"
         },
+        {
+            "name": "wpackagist-plugin/activitypub",
+            "version": "0.13.4",
+            "source": {
+                "type": "svn",
+                "url": "https://plugins.svn.wordpress.org/activitypub/",
+                "reference": "tags/0.13.4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://downloads.wordpress.org/plugin/activitypub.0.13.4.zip"
+            },
+            "require": {
+                "composer/installers": "^1.0 || ^2.0"
+            },
+            "type": "wordpress-plugin",
+            "homepage": "https://wordpress.org/plugins/activitypub/"
+        },
         {
             "name": "wpackagist-plugin/autopost-to-mastodon",
             "version": "3.6.1",
@@ -1378,7 +1396,7 @@
             },
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/plugin/wp2pgpmail.zip?timestamp=1652169575"
+                "url": "https://downloads.wordpress.org/plugin/wp2pgpmail.zip?timestamp=1667389997"
             },
             "require": {
                 "composer/installers": "^1.0 || ^2.0"
@@ -2153,5 +2171,5 @@
         "php": ">=7.1"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.3.0"
+    "plugin-api-version": "2.2.0"
 }