diff --git a/data/old_grade.txt b/data/old_grade.txt
index 24f0c06..d695aa1 100644
--- a/data/old_grade.txt
+++ b/data/old_grade.txt
@@ -1 +1 @@
-6378d9b213bc9ead2108e3f77c32c678
\ No newline at end of file
+55180feacfc29c7d946df261b9c5f5b5
\ No newline at end of file