diff --git a/src/ebook/extract_book_code.py b/src/ebook/extract_book_code.py
index 193d83cf5fa1cd8e963d82fba4060e43b0df7e7d..d18854453acc407bdbfd9f7dd70ddb346e35a4e9 100644
--- a/src/ebook/extract_book_code.py
+++ b/src/ebook/extract_book_code.py
@@ -13,7 +13,7 @@ def extract_code():
     # with open(book_mapping_path, "r") as f:
     #     book_mapping = json.load(f)
     book_mapping = {
-        "深入剖析Nginx": "08fd0c7025a4a34a97a29897b067d24",
+        "深入剖析Nginx": "608fd0c7025a4a34a97a29897b067d24",
     }
     for book_idx, book_name in enumerate(book_mapping.keys()):
         book_dir_name = book_name