diff --git a/linux_cross/Dockerfile b/linux_cross/Dockerfile
index 32afd50..d2400cb 100644
--- a/linux_cross/Dockerfile
+++ b/linux_cross/Dockerfile
@@ -15,8 +15,8 @@ ENV QT_SELECT=5
 ENV LANG=en_US.utf8
 
 # 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
 
 # configs
 COPY .bashrc /root/.bashrc
diff --git a/linux_desktop/Dockerfile b/linux_desktop/Dockerfile
index 32e75e5..20a2b16 100644
--- a/linux_desktop/Dockerfile
+++ b/linux_desktop/Dockerfile
@@ -22,8 +22,8 @@ ENV QT_SELECT=5
 ENV LANG=en_US.utf8
 
 # 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
 
 # configs
 COPY .bashrc /root/.bashrc