diff --git a/nushell/config.nu b/nushell/config.nu
index f5a49a5..0bfd22a 100644
--- a/nushell/config.nu
+++ b/nushell/config.nu
@@ -160,6 +160,27 @@ export extern "ssh" [
     host?: string@_ssh_hosts
 ]
 
+# update completion
+def _update_args [] {
+    [
+        system
+        rust
+        wasm
+        npm
+        dotfiles
+        neovim
+        check
+        startup
+        last-update
+        postpone
+        force-unlock
+    ]
+}
+
+def u [arg?: string@_update_args] {
+    ^update $arg
+}
+
 # gclone aliases
 def _gclone_dirs [] {
     let slashes = ($env.GCLONE_PATH | split row "/" | length) + 2
@@ -219,7 +240,6 @@ alias kns = k9s
 # Useful aliases
 alias :q = exit
 alias pdf = evince
-alias u = ^update
 alias rg = rg -uu
 alias p = pass
 alias pc = pass --clip