diff --git a/EIPS/eip-155.md b/EIPS/eip-155.md
index 9e18730b..e65b806d 100644
--- a/EIPS/eip-155.md
+++ b/EIPS/eip-155.md
@@ -9,6 +9,9 @@ Status: Final
 Created: 2016-10-14
 ```
 
+### Hard fork meta reference
+[Spurious Dragon](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-607.md)
+
 ### Parameters
 - `FORK_BLKNUM`: 2,675,000
 - `CHAIN_ID`: 1