diff --git a/flake.lock b/flake.lock
index e25d111c..3d5f319c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -222,11 +222,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1725432240,
-        "narHash": "sha256-+yj+xgsfZaErbfYM3T+QvEE2hU7UuE+Jf0fJCJ8uPS0=",
+        "lastModified": 1725983898,
+        "narHash": "sha256-4b3A9zPpxAxLnkF9MawJNHDtOOl6ruL0r6Og1TEDGCE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ad416d066ca1222956472ab7d0555a6946746a80",
+        "rev": "1355a0cbfeac61d785b7183c0caaec1f97361b43",
         "type": "github"
       },
       "original": {
diff --git a/packages/fluent-icons.nix b/packages/fluent-icons.nix
index 3e2f9a2f..dc6429f7 100644
--- a/packages/fluent-icons.nix
+++ b/packages/fluent-icons.nix
@@ -19,6 +19,13 @@ let
       hash = "sha256-6jaRyZsp9GVYAihE8lcslwpDtcKJfC2KZbXw0MFJNRY=";
     };
 
+    postInstall = ''
+      installShellCompletion --cmd lutgen \
+        --bash <($out/bin/lutgen completions bash) \
+        --fish <($out/bin/lutgen completions fish) \
+        --zsh <($out/bin/lutgen completions zsh)
+    '';
+
     cargoDeps = oldAttrs.cargoDeps.overrideAttrs (
       lib.const {
         name = "${oldAttrs.pname}-${version}-vendor.tar.gz";