diff --git a/misc/ci/Dockerfile b/misc/ci/Dockerfile
index 4002b0a..8141b77 100644
--- a/misc/ci/Dockerfile
+++ b/misc/ci/Dockerfile
@@ -1,5 +1,5 @@
-FROM golang:1.19
+FROM reg.cadoles.com/proxy_cache/library/golang:1.21
 
-RUN apt-get update && apt-get install -y make upx-ucl curl ca-certificates bash jq
+RUN apt-get update && apt-get install -y make curl ca-certificates bash jq
 
 RUN curl -k https://forge.cadoles.com/Cadoles/Jenkins/raw/branch/master/resources/com/cadoles/common/add-letsencrypt-ca.sh | bash