diff --git a/is-my-code-constant-time?.md b/is-my-code-constant-time?.md
index 3c1d48e..4c98358 100644
--- a/is-my-code-constant-time?.md
+++ b/is-my-code-constant-time?.md
@@ -7,6 +7,7 @@ Non-constant time crypto code is dangerous.
 1. [cmd/compile: use devirtualization in escape analysis](https://github.com/golang/go/issues/33160)
 1. [cmd/compile: inlining after devirtualization](https://github.com/golang/go/issues/52193)
 1. [crypto/elliptic: automatically upgrade CurveParams for known curves and deprecate custom ones](https://github.com/golang/go/issues/34648)
+1. [PLANNING GO 1.20 CRYPTOGRAPHY WORK](https://words.filippo.io/dispatches/go1-20/)
 
 ## ECDH & SM2 Key Exchange
 SM2 Key Exchange要去除big.Int依赖，看起来比ECDH困难得多，主要是第三、四和五步。