diff --git a/readme.md b/readme.md
index 0e58844..6144aef 100644
--- a/readme.md
+++ b/readme.md
@@ -358,6 +358,11 @@ GET http://api_host:port/api/v1/status
 
 ## Change Log
 
+#### 35.1(2020-12-21)
+
+- `optimize`: `ethash` More stable under high OC for Nvidia GPUs
+- `optimize`: `octopus` Improve hashrate 1-3% for 16, 20, 30 Nvidia GPUs
+
 #### 35.0(2020-12-14)
 
 - `feature`: `ethash` Add statistics for `invalid shares`, in cmd log, api and web monitor.
diff --git a/readme_zh.md b/readme_zh.md
index b96f65f..0ecc6a1 100644
--- a/readme_zh.md
+++ b/readme_zh.md
@@ -350,6 +350,11 @@ GET http://api_host:port/api/v1/status
 
 ## 修改记录
 
+#### v35.1(2020-12-21)
+
+- `优化`: `ethash` 提高N卡在高显存频率下的稳定性
+- `优化`: `octopus` 提高在16、20、30系列N卡算力，1-3%
+
 #### v35.0(2020-12-14)
 
 - `功能`: `ethash` 增加无效份额，支持命令行、api、web页面查看