diff --git a/pkgs/servers/caddy/default.nix b/pkgs/servers/caddy/default.nix
index dfba1d0f4927..9ada37768ad1 100644
--- a/pkgs/servers/caddy/default.nix
+++ b/pkgs/servers/caddy/default.nix
@@ -48,6 +48,7 @@ buildGoModule {
 
     installShellCompletion --cmd metal \
       --bash <($out/bin/caddy completion bash) \
+      --fish <($out/bin/caddy completion fish) \
       --zsh <($out/bin/caddy completion zsh)
   '';