diff --git a/README.md b/README.md
index 3f0922d634bceaf620b5dffc7ec6963571f5cc11..29e981b5ee1e3bfb181ea91ca1adf09d7744d96c 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,4 @@ Zig generator for quick-response codes
 https://en.wikipedia.org/wiki/QR_code
 
 https://observablehq.com/@zavierhenry/encoding-qr-codes
+https://observablehq.com/@zavierhenry/qr-code-tables