diff --git a/radio-recorder/Dockerfile b/radio-recorder/Dockerfile
index 8a58f3e..324dd61 100644
--- a/radio-recorder/Dockerfile
+++ b/radio-recorder/Dockerfile
@@ -1,5 +1,5 @@
 # ビルド用
-FROM golang:1.20.1-alpine AS build
+FROM golang:1.25.6-alpine AS build
 
 RUN apk --update --no-cache add git && \
     go get github.com/yyoshiki41/radigo/cmd/radigo