diff --git a/composer.json b/composer.json
index 9bfedf8f6a91559ed9f7419cb52fdc1e38a0b629..de854438c29a6138dbc0d56161243e346364de01 100644
--- a/composer.json
+++ b/composer.json
@@ -127,7 +127,7 @@
         "wpackagist-plugin/event-organiser": "3.12.3",
         "noblogs/ai-authenticate-rest-api-plugin": "0.0.3",
         "wpackagist-plugin/multisite-custom-css": "1.0",
-        "wpackagist-plugin/activitypub": "0.16.2",
+        "wpackagist-plugin/activitypub": "0.17.0",
         "wpackagist-plugin/memcached": "4.0.0"
     },    
     "extra": {
diff --git a/composer.lock b/composer.lock
index c212ac26c7a325011dd39b1444fe9b9f43edee3e..aa2dc6f9e02e5404846b2d0e75fd417e345c5a73 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": "0c9adcb88af98b6f1c563d1afee05900",
+    "content-hash": "ef63a2c6396358cfd10255684c663f05",
     "packages": [
         {
             "name": "bjornjohansen/wplang",
@@ -830,15 +830,15 @@
         },
         {
             "name": "wpackagist-plugin/activitypub",
-            "version": "0.16.2",
+            "version": "0.17.0",
             "source": {
                 "type": "svn",
                 "url": "https://plugins.svn.wordpress.org/activitypub/",
-                "reference": "tags/0.16.2"
+                "reference": "tags/0.17.0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://downloads.wordpress.org/plugin/activitypub.0.16.2.zip"
+                "url": "https://downloads.wordpress.org/plugin/activitypub.0.17.0.zip"
             },
             "require": {
                 "composer/installers": "^1.0 || ^2.0"