diff --git a/data/mirror_data.py b/data/mirror_data.py
index 063c50a5a..efcb73b07 100644
--- a/data/mirror_data.py
+++ b/data/mirror_data.py
@@ -5,7 +5,7 @@ Install_macOS_Big_Sur_11_2_3 = {
     "Version": "11.2.3",
     "Build": "20D91",
     "Link": "https://archive.org/download/install-assistant-20D91/InstallAssistant.pkg",
-    "Size": 11848909000,
+    "Size": 12211077798,
     "Source": "Archive.org",
     "integirty": None,
 }
\ No newline at end of file