diff --git a/.zshrc b/.zshrc
index 451a01e..1ef5d22 100644
--- a/.zshrc
+++ b/.zshrc
@@ -148,13 +148,15 @@
  LANG=en_GB.UTF-8
  http_proxy="http://localhost:8118"
 
- if [ -z "$SSH_AUTH_SOCK" ]; then
-     eval `ssh-agent -s -t6h` > /dev/null
-     if [ ! -S $HOME/.ssh/ssh_auth_sock ]; then
-         ln -sf "$SSH_AUTH_SOCK" $HOME/.ssh/ssh_auth_sock
-         SSH_AUTH_SOCK=$HOME/.ssh/ssh_auth_sock
-     fi
- fi
+ ## use omz plugin.
+ #
+ #if [ -z "$SSH_AUTH_SOCK" ]; then
+ #    eval `ssh-agent -s -t6h` > /dev/null
+ #    if [ ! -S $HOME/.ssh/ssh_auth_sock ]; then
+ #        ln -sf "$SSH_AUTH_SOCK" $HOME/.ssh/ssh_auth_sock
+ #        SSH_AUTH_SOCK=$HOME/.ssh/ssh_auth_sock
+ #    fi
+ #fi
 
 
  export EDITOR='vim'