diff --git a/mkdocs.yml b/mkdocs.yml
index 7c6b41ad..81fec599 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -117,6 +117,7 @@ nav:
       - "UCB CS169: software engineering": "软件工程/CS169.md"
   - 体系结构:
       - "Coursera: Nand2Tetris": "体系结构/N2T.md"
+      - "Digital Design and Computer Architecture": "体系结构/DDCA.md"      
       - "UCB CS61C: Great Ideas in Computer Architecture": "体系结构/CS61C.md"
       - "CMU 15-213: CSAPP": "体系结构/CSAPP.md"
   - 操作系统: