diff --git a/website/Makefile b/website/Makefile
index c4e805c..ca41cf2 100755
--- a/website/Makefile
+++ b/website/Makefile
@@ -7,6 +7,7 @@ all:
 	rm -rf ./src/modern-cpp/assets/figures
 	cp ../assets/cover-2nd.png ./src/modern-cpp/assets/cover-2nd.png
 	cp -r ../assets/figures ./src/modern-cpp/assets/figures
+	cp -r ../code ./src/modern-cpp/book/
 	hexo generate
 	mv public/index.html public/modern-cpp/index.html
 s: