diff --git a/_nvm b/_nvm
index 1eec48b..ff2be83 100644
--- a/_nvm
+++ b/_nvm
@@ -5,24 +5,27 @@
 
 local -a _1st_arguments
 _1st_arguments=(
-  'help:show help'
-  '--version:print out the latest released version of nvm'
-  'install:download and install a version in <node|iojs|node version number>'
-  'uninstall:uninstall a version'
-  'use:modify PATH to use <version>. Uses .nvmrc if available'
-  'exec:run <command> on <version>. Uses .nvmrc if available'
-  'run:run `node` on <version> with <args> as arguments. Uses .nvmrc if available'
-  'current:list installed versions'
-  'ls:list installed versions or versions matching a given description'
-  'version:resolve the given description to a single local version'
-  'version-remote:resolve the given description to a single remote version'
-  'ls-remote:list remote versions available for install'
-  'deactivate:undo effects of `nvm` on current shell'
-  'alias:show or set aliases'
-  'unalias:deletes an alias'
-  'reinstall-packages:reinstall global `npm` packages contained in <version> to current version'
-  'unload:unload `nvm` from shell'
-  'which:display path to installed node version. Uses .nvmrc if available'
+  '--help:Show help'
+  '--version:Print out the installed version of nvm'
+  'install:Download and install a <version>, [-s] from source. Uses .nvmrc if available'
+  'uninstall:Uninstall a version'
+  'use:Modify PATH to use <version>. Uses .nvmrc if available'
+  'exec:Run <command> on <version>. Uses .nvmrc if available'
+  'run:Run `node` on <version> with <args> as arguments. Uses .nvmrc if available'
+  'current:Display currently activated version of Node'
+  'ls:List installed versions, matching a given <version> if provided'
+  'ls-remote:List remote versions available for install, matching a given <version> if provided'
+  'version:Resolve the given description to a single local version'
+  'version-remote:Resolve the given description to a single remote version'
+  'deactivate:Undo effects of `nvm` on current shell'
+  'alias:Show all aliases beginning with <pattern>'
+  'unalias:Deletes the alias named <name>'
+  'install-latest-npm:Attempt to upgrade to the latest working `npm` on the current node version'
+  'reinstall-packages:Reinstall global `npm` packages contained in <version> to current version'
+  'unload:Unload `nvm` from shell'
+  'which:Display path to installed node version. Uses .nvmrc if available'
+  'upgrade:Upgrade to the latest release of `nvm`'
+  'revert:Revert back to the previously installed version'
 )
 
 _arguments -C '*:: :->subcmds' && return 0