diff --git a/README.md b/README.md
index 319cc32..818353c 100644
--- a/README.md
+++ b/README.md
@@ -24,4 +24,6 @@ PDF 中为了方便制作纸盒，有加入部分辅助线，如果感觉影响
 
 ## LICENSE
 
-[CC BY-NC-SA 4.0](http://creativecommons.org/licenses/by-nc-sa/4.0/)
+<a rel="license" href="http://creativecommons.org/licenses/by/2.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/2.0/88x31.png" /></a>
+
+This work is licensed under a [Creative Commons Attribution 2.0 Generic License](http://creativecommons.org/licenses/by/2.0/).