diff --git a/.duci/Dockerfile b/.duci/Dockerfile
index 41d8be3..73a7b7b 100644
--- a/.duci/Dockerfile
+++ b/.duci/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.0-alpine
+FROM golang:1.20.1-alpine
 MAINTAINER shunsuke maeda <duck8823@gmail.com>
 
 RUN apk --update add --no-cache alpine-sdk