diff --git a/tests/install.t b/tests/install.t
index 1b49edd..36fa1e4 100644
--- a/tests/install.t
+++ b/tests/install.t
@@ -1,4 +1,4 @@
-Confirm we have no plugins
+Confirm we have no plugins.
 
   $ bundle-list
   You don't have any bundles.
@@ -16,7 +16,7 @@ Check if the lol plugin is correctly loaded.
   $ alias wtf
   wtf=dmesg
 
-On-spot installation
+On-spot installation.
 
   $ bundle-install git
   Installing git
@@ -26,8 +26,19 @@ Check if git plugin is loaded correctly.
   $ alias g
   g=git
 
-Confirm the listing of plugins
+Confirm the listing of plugins.
 
   $ bundle-list
   lol https://github.com/robbyrussell/oh-my-zsh.git plugins/lol
   git https://github.com/robbyrussell/oh-my-zsh.git plugins/git
+
+Update plugins (test both alternate syntaxes for do this).
+
+  $ bundle-install!
+  Already up-to-date.
+  Installing lol
+  Installing git
+  $ bundle-install --update
+  Already up-to-date.
+  Installing lol
+  Installing git