diff --git a/composer.json b/composer.json
index 11c5858..fcd1637 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,10 @@
     "type": "flarum-extension",
     "license": "MIT",
     "require": {
-        "flarum/core": "^1.2.0"
+        "flarum/core": "^1.2.0",
+        "league/oauth2-server": "*",
+        "ext-openssl": "*",
+        "ext-json": "*"
     },
     "authors": [
         {