diff --git a/composer.json b/composer.json
index 28a4b09b7a8d329a2a95dccfd06f12986a4d6de9..6429b542486b564bda17672a5e624ab13b23be02 100644
--- a/composer.json
+++ b/composer.json
@@ -131,7 +131,7 @@
         "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/activitypub": "^0.13.4"
+        "wpackagist-plugin/activitypub": "0.13.4"
     },    
     "extra": {
         "wordpress-install-dir": "app",
diff --git a/composer.lock b/composer.lock
index 4f26331281118ab5340c154664745fc99c6c9836..aac5bb74f1863b4583588a6351011b8ccc74015d 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": "6500ec70966db4fc24031d0aa264eda9",
+    "content-hash": "016fcc28167ba7db17b6d1c0504fbee5",
     "packages": [
         {
             "name": "bjornjohansen/wplang",
@@ -2171,5 +2171,5 @@
         "php": ">=7.1"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.3.0"
 }