diff --git a/pre_commit_hooks/check_merge_conflict.py b/pre_commit_hooks/check_merge_conflict.py
index c20a8af..2e52e06 100644
--- a/pre_commit_hooks/check_merge_conflict.py
+++ b/pre_commit_hooks/check_merge_conflict.py
@@ -7,6 +7,7 @@ from typing import Sequence
 CONFLICT_PATTERNS = [
     b'<<<<<<< ',
     b'======= ',
+    b'||||||| ',
     b'=======\n',
     b'>>>>>>> ',
 ]