diff --git a/README.md b/README.md
index 4cbf004..8228cd7 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ mv /tmp/pgscv.service /etc/systemd/system &&  \
 mv /tmp/pgscv.default /etc/default/pgscv && \
 mv /tmp/pgscv /usr/sbin && \
 chown postgres:postgres /etc/pgscv.yaml && \
+chmod 640 /etc/pgscv.yaml && \
 systemctl daemon-reload && \
 systemctl enable pgscv --now
 ```
diff --git a/README.ru.md b/README.ru.md
index 21c3992..dab80a5 100644
--- a/README.ru.md
+++ b/README.ru.md
@@ -35,6 +35,7 @@ mv /tmp/pgscv.service /etc/systemd/system &&  \
 mv /tmp/pgscv.default /etc/default/pgscv && \
 mv /tmp/pgscv /usr/sbin && \
 chown postgres:postgres /etc/pgscv.yaml && \
+chmod 640 /etc/pgscv.yaml && \
 systemctl daemon-reload && \
 systemctl enable pgscv --now
 ```