diff --git a/composer.json b/composer.json
index 21a91f4..72fd08f 100644
--- a/composer.json
+++ b/composer.json
@@ -1,8 +1,10 @@
-{
-  "name": "drupal/ldap",
-  "description": "Lightweight Directory Access Protocol (LDAP)",
-  "type": "drupal-module",
-  "license": "GPL-2.0+",
-  "minimum-stability": "dev",
-  "require": { }
-}
+{
+    "name": "drupal/ldap",
+    "description": "Lightweight Directory Access Protocol (LDAP)",
+    "type": "drupal-module",
+    "license": "GPL-2.0+",
+    "minimum-stability": "dev",
+    "require": {
+        "drupal/externalauth": "8.x-1.0-alpha4"
+    }
+}