diff --git a/config-debian.sh b/config-debian.sh
index 17867fd..229577e 100755
--- a/config-debian.sh
+++ b/config-debian.sh
@@ -60,6 +60,9 @@ echo "<<< Allow the new user $NewUser to sudo without password"
 #sed -i "s|%sudo\s\+ALL=(ALL:ALL)\sALL|%sudo\tALL=(ALL:ALL) NOPASSWD:ALL|g" /etc/sudoers
 #chmod o-w /etc/sudoers
 echo "Option 2: Add a file for the new user in /etc/sudoers.d/ folder"
+chmod o+w /etc/sudoers
+sed -i "s|#includedir /etc/sudoers.d|includedir /etc/sudoers.d" /etc/sudoers
+chmod o-w /etc/sudoers
 echo 'adot ALL=(ALL:ALL) NOPASSWD:ALL' > /etc/sudoers.d/$NewUser
 chmod a-w /etc/sudoers.d/$NewUser
 
diff --git a/install-seafile.sh b/install-seafile.sh
index 3fd50ff..57db623 100755
--- a/install-seafile.sh
+++ b/install-seafile.sh
@@ -8,14 +8,16 @@ sudo pip3 install --timeout=3600 Pillow pylibmc captcha jinja2 sqlalchemy==1.3.8
 pushd /faronear
 sudo mkdir bin.seafile
 cd bin.seafile
-sudo wget https://seafile-downloads.oss-cn-shanghai.aliyuncs.com/seafile-server_8.0.5_x86-64.tar.gz
+sudo wget https://seafile-downloads.oss-cn-shanghai.aliyuncs.com/seafile-server_8.0.6_x86-64.tar.gz
 sudo tar -xzf seafile-server_*
 cd seafile-server-*
 sudo ./setup-seafile.sh
 
-# don't know why but sometimes it must be changed to 0.0.0.0 so that seahub.sh doesn't fail.
-#sudo sed -i "s/127\.0\.0\.1/0.0.0.0/g" ../conf/gunicorn.conf.py
 sudo ./seafile.sh start
+
+# changed "127.0.0.1:8000" to "0.0.0.0:8000", otherwise it can only be accessed on the localhost.
+sudo sed -i "s/127\.0\.0\.1/0.0.0.0/g" ../conf/gunicorn.conf.py
+# to change seahub port, to edit gunicorn.conf.py, it works although it still promts "Starting seahub at port 8000 ...". (Directly `./seahub.sh start <PORT>` prompts "Starting seahub at port <PORT> ..." but it actually doesn't listen on <PORT>.)
 sudo ./seahub.sh start
 
 popd