diff --git a/src/Zxcvbn/package.json b/src/Zxcvbn/package.json
index e86843b..8851e2e 100644
--- a/src/Zxcvbn/package.json
+++ b/src/Zxcvbn/package.json
@@ -31,6 +31,10 @@
             "required": true,
             "file": "Abstracts/Score.php"
         },
+        {
+            "required": true,
+            "file": "Abstracts/ScoreDefinitions.php"
+        },
         {
             "required": true,
             "file": "Classes/FeedbackUtilities.php"