diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Gridfinity Rebuilt in OpenSCAD 
 
+[![CC BY-NC-SA 4.0][cc-by-nc-sa-shield]][cc-by-nc-sa]
+
 A ground-up port (with a few extra features) of the stock [gridfinity](https://www.youtube.com/watch?v=ra_9zU-mnl8) bins in OpenSCAD. Open to feedback, because I could not feasibly test all combinations of bins. I tried my best to exactly match the original gridfinity dimensions, but some of the geometry is slightly incorrect (mainly fillets). However, I think they are negligible differences, and will not appear in the printed model.
 
 [<img src="./images/base_dimension.gif" width="320">]()
@@ -150,3 +152,12 @@ More complex examples of all modules can be found in the scripts.
 [<img src="./images/spin.gif" width="160">]()
 
 [Gridfinity](https://www.youtube.com/watch?v=ra_9zU-mnl8) by [Zack Freedman](https://www.youtube.com/c/ZackFreedman/about)
+
+This work is licensed under the same license as Gridfinity, being a 
+[Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License][cc-by-nc-sa].
+
+[![CC BY-NC-SA 4.0][cc-by-nc-sa-image]][cc-by-nc-sa]
+
+[cc-by-nc-sa]: http://creativecommons.org/licenses/by-nc-sa/4.0/
+[cc-by-nc-sa-image]: https://licensebuttons.net/l/by-nc-sa/4.0/88x31.png
+[cc-by-nc-sa-shield]: https://img.shields.io/badge/License-CC%20BY--NC--SA%204.0-lightgrey.svg