diff --git a/README.md b/README.md
index 3067d48..29af4a6 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ This section includes an exhaustive list of possible configuration values for ot
 | `log_chat`    | nil     | Telegram ID of the recipient for error messages.   |
 | `cmd_pat`     | `"/"`   | Character (or string) to be used for bot commands. |
 | `lang`        | `"en"`  | Two-letter ISO 639-1 language code.                |
-| `about_text`  | ...   | Informational text to be returned by /about.       |
+| `about_text`  | ...     | Informational text to be returned by /about.       |
 
 #### Error messages
 These are the generic error messages used by most plugins. These belong in a table named `errors`.
diff --git a/install-dependencies.sh b/install-dependencies.sh
index a8d4e50..4c6924d 100755
--- a/install-dependencies.sh
+++ b/install-dependencies.sh
@@ -4,16 +4,18 @@
 
 #!/bin/sh
 
-echo "This script is intended for Ubuntu 16.04 and later. It will not work in 14.04 or earlier."
+echo "This script is intended for Ubuntu 16.04 and later. It will not work in"
+echo "14.04 or earlier."
 echo "This script will request root privileges to install the following packages:"
-echo "lua5.3 liblua5.3-dev git libssl-dev fortune-mod fortunes"
-echo "It will also request root privileges to install Luarocks to to /usr/local/ along with the following rocks:"
+echo "lua5.3 liblua5.3-dev git libssl-dev fortune-mod fortunes unzip"
+echo "It will also request root privileges to install Luarocks to to /usr/local/"
+echo "along with the following rocks:"
 echo "luasocket luasec multipart-post lpeg dkjson"
 echo "Press enter to continue. Use Ctrl-C to exit."
 read
 
 sudo apt-get update
-sudo apt-get install -y lua5.3 liblua5.3-dev git libssl-dev fortune-mod fortunes
+sudo apt-get install -y lua5.3 liblua5.3-dev git libssl-dev fortune-mod fortunes unzip
 git clone http://github.com/keplerproject/luarocks
 cd luarocks
 ./configure --lua-version=5.3 --versioned-rocks-dir --lua-suffix=5.3
@@ -24,6 +26,7 @@ sudo luarocks-5.3 install luasec
 sudo luarocks-5.3 install multipart-post
 sudo luarocks-5.3 install lpeg
 sudo luarocks-5.3 install dkjson
+sudo -k
 cd ..
 
 echo "Finished. Use ./launch to start otouto."
diff --git a/tg-install.sh b/tg-install.sh
index c53c328..1b6ea6c 100755
--- a/tg-install.sh
+++ b/tg-install.sh
@@ -2,7 +2,8 @@
 
 #!/bin/sh
 
-echo "This script is intended for Ubuntu 16.04 and later. It will probably work on 14.04 or 12.04 as well as Debian, but this is not guaranteed."
+echo "This script is intended for Ubuntu 16.04 and later. It will probably work on"
+echo "14.04 or 12.04 as well as Debian, but this is not guaranteed."
 echo "This script will request root privileges to install the following packages:"
 echo "git libreadline-dev libssl-dev libevent-dev make"
 echo "Press enter to continue. Use Ctrl-C to exit."
@@ -10,6 +11,7 @@ read
 
 sudo apt-get update
 sudo apt-get install -y git libreadline-dev libssl-dev libevent-dev make
+sudo -k
 git clone http://github.com/vysheng/tg --recursive -b test
 cd tg
 ./configure --disable-libconfig --disable-liblua --disable-json