diff --git a/pkgs/by-name/fa/fabric-ai/package.nix b/pkgs/by-name/fa/fabric-ai/package.nix
index 21b6adf4c32d..61476bdb572f 100644
--- a/pkgs/by-name/fa/fabric-ai/package.nix
+++ b/pkgs/by-name/fa/fabric-ai/package.nix
@@ -2,6 +2,7 @@
   lib,
   buildGoModule,
   fetchFromGitHub,
+  installShellFiles,
   nix-update-script,
 }:
 
@@ -26,6 +27,15 @@ buildGoModule rec {
     "-w"
   ];
 
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    installShellCompletion \
+      --bash ./completions/fabric.bash \
+      --zsh ./completions/_fabric \
+      --fish ./completions/fabric.fish
+  '';
+
   passthru.updateScript = nix-update-script { };
 
   meta = {