diff --git a/embassy-net-adin1110/README.md b/embassy-net-adin1110/README.md
index 39a38960d..0514274b4 100644
--- a/embassy-net-adin1110/README.md
+++ b/embassy-net-adin1110/README.md
@@ -21,7 +21,7 @@ APL can be used in [`intrinsic safety applications/explosion hazardous areas`](h
 
 ## Supported SPI modes
 
-`ADIN1110` supports two SPI modes. `Generic` and [`OPEN Alliance 10BASE-T1x MAC-PHY serial interface`](https://opensig.org/download/document/OPEN_Alliance_10BASET1x_MAC-PHY_Serial_Interface_V1.1.pdf)
+`ADIN1110` supports two SPI modes. `Generic` and [`OPEN Alliance 10BASE-T1x MAC-PHY serial interface`](https://opensig.org/wp-content/uploads/2023/12/OPEN_Alliance_10BASET1x_MAC-PHY_Serial_Interface_V1.1.pdf)
 
 Both modes support with and without additional CRC.
 Currently only `Generic` SPI with or without CRC is supported.