diff --git a/frontiers/c8_window_coefficient_d6_20261001/SOURCE_FILES.json b/frontiers/c8_window_coefficient_d6_20261001/SOURCE_FILES.json
index cc4d8cb42..eed815876 100644
--- a/frontiers/c8_window_coefficient_d6_20261001/SOURCE_FILES.json
+++ b/frontiers/c8_window_coefficient_d6_20261001/SOURCE_FILES.json
@@ -86,7 +86,7 @@
       "pr": "https://github.com/d6g8k5htny-coder/Math-/pull/201",
       "commit": "3abcc10",
       "path": "coefficients/side24_d4_closed_form_20260930/NOTE.md",
-      "git_blob": "cbf35dea",
+      "git_blob": "cbf35dead9f20cb8e68c357c62aca6413fb870af",
       "role": "the closed form of D_3 (rule CROSSCHECK_M2_M4, m = 3)"
     }
   ],