diff --git a/debian-base/Dockerfile b/debian-base/Dockerfile
index 35fec64..7b5298d 100644
--- a/debian-base/Dockerfile
+++ b/debian-base/Dockerfile
@@ -1,8 +1,8 @@
 FROM debian:trixie-slim
 
 # apply RU mirror
-RUN sed -i 's/deb.debian.org/mirror.mephi.ru/g' /etc/apt/sources.list || true
-RUN sed -i 's/deb.debian.org/mirror.mephi.ru/g' /etc/apt/sources.list.d/* || true
+RUN sed -i 's/deb.debian.org/mirror.truenetwork.ru/g' /etc/apt/sources.list || true
+RUN sed -i 's/deb.debian.org/mirror.truenetwork.ru/g' /etc/apt/sources.list.d/* || true
 
 # locales
 RUN apt-get update && apt-get install -y locales && rm -rf /var/lib/apt/lists/* \