diff --git a/.bash_profile b/.bash_profile
index 0b69ebd..02e9ca8 100644
--- a/.bash_profile
+++ b/.bash_profile
@@ -287,7 +287,7 @@ function __bash_profile__splash_screen {
 ###############
 
 OPTIND=1
-while getopts "wu" OPT; do
+while getopts "wup:" OPT; do
     case $OPT in
         w)
             __bash_profile__splash_screen
@@ -295,5 +295,8 @@ while getopts "wu" OPT; do
         u)
             (bash_profile__update > /dev/null 2>&1 &)
             ;;
+        p)
+            proxy__set $OPTARG
+            ;;
     esac
 done
diff --git a/README.md b/README.md
index 3215eb8..b5db087 100644
--- a/README.md
+++ b/README.md
@@ -25,11 +25,12 @@ Open and modify your `~/.bash_profile` on OS X and Windows or `~/.bashrc` on Ubu
 
 ```sh
 # https://github.com/marcomontalbano/bash_profile
-source ~/bash_profile/.bash_profile -u
+source ~/bash_profile/.bash_profile -p <http_proxy> -u
 ```
 
 ### Options
 
+- `-p <http-proxy>`: combined with `-u`, you can use self-update behind proxy.
 - `-u`: enables self-update for bash_profile. (the latest release will automatically downloaded and loaded)
 - `-w`: show welcome screen on new tabs.
 
diff --git a/VERSION b/VERSION
index 347f583..9df886c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.4.1
+1.4.2