diff --git a/setup_tor.sh b/setup_tor.sh
index 068028c..0a15b43 100644
--- a/setup_tor.sh
+++ b/setup_tor.sh
@@ -1,18 +1,26 @@
 #!/bin/sh
 sh /setup_programs.sh
 
+# libevent
 wget --user ${FTP_USER} --password ${FTP_PASSWORD} ftp://${FTP_HOST}:${FTP_PORT}/libevent-2.1-6_2.1.8-stable-4build1_amd64.deb  -O /tmp/libevent.deb
 dpkg -i /tmp/libevent.deb
 
-#libc6 2.34
-?
+#gcc (>= 4:9)
+#g++ (>= 4:9.2)
+#dpkg-dev (>= 1.17.11)
+
+# libc6
+wget --user ${FTP_USER} --password ${FTP_PASSWORD} ftp://${FTP_HOST}:${FTP_PORT}/libc6_2.34-0ubuntu3_amd64.deb  -O /tmp/libc6_2.34.deb
+dpkg -i /tmp/libc6_2.34.deb
 #apt show -a libc6
 apt install libc6="2.31-0ubuntu9"
 apt install build-essential
 
+# obfs4proxy
 wget --user ${FTP_USER} --password ${FTP_PASSWORD} ftp://${FTP_HOST}:${FTP_PORT}/obfs4proxy_0.0.14-1build1_amd64.deb -O /tmp/obfs4proxy.deb
 dpkg -i /tmp/obfs4proxy.deb
 
+# tor
 # see https://deb.torproject.org/torproject.org/pool/main/t/tor/
 # see https://support.torproject.org/apt/tor-deb-repo/
 wget --user ${FTP_USER} --password ${FTP_PASSWORD} ftp://${FTP_HOST}:${FTP_PORT}/tor_0.4.8.12-1~bionic+1_amd64.deb -O /tmp/tor.deb