diff --git a/Dockerfile b/Dockerfile
index ba58cf1..0f5e8e2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,9 @@ FROM debian:trixie
 
 ENV DEBIAN_FRONTEND=noninteractive
 
+# 한국 Debian 미러 소스로 변경
+RUN sed -i 's|deb.debian.org|ftp.kr.debian.org|g' /etc/apt/sources.list && \
+    sed -i 's|security.debian.org|ftp.kr.debian.org/debian-security|g' /etc/apt/sources.list
 
 RUN apt-get update