diff --git a/data/old_grade.txt b/data/old_grade.txt
index f8d206f..6530f18 100644
--- a/data/old_grade.txt
+++ b/data/old_grade.txt
@@ -1 +1 @@
-30d49158f0365fcc558f2cdcf1f5e86d
\ No newline at end of file
+6bd66c89fc6e58091fb95b8d7e316cff
\ No newline at end of file