diff --git a/pkgs/tools/misc/intermodal/default.nix b/pkgs/tools/misc/intermodal/default.nix
index 409b603a353..555f4a529b9 100644
--- a/pkgs/tools/misc/intermodal/default.nix
+++ b/pkgs/tools/misc/intermodal/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, rustPlatform, fetchFromGitHub }:
+{ lib, stdenv, rustPlatform, fetchFromGitHub, installShellFiles }:
 
 rustPlatform.buildRustPackage rec {
   pname = "intermodal";
@@ -8,14 +8,23 @@ rustPlatform.buildRustPackage rec {
     owner = "casey";
     repo = pname;
     rev = "v${version}";
-    sha256 = "0mn0wm3bihn7ffqk0p79mb1hik54dbhc9diq1wh9ylpld2iqmz68";
+    hash = "sha256-yPyKo2j0Up8gDzi2xOBqpMwIw6rpXDCxc8fCuEblwFY=";
   };
 
-  cargoSha256 = "1bvs23rb25qdwbrygzq11p8cvck5lxjp9llvs1cjdh0qzr65jwla";
+  cargoHash = "sha256-inJZTP4YwCZZ0JvSdGWnZbLN0A0B/+fz4g0XsfIQeq8=";
 
   # include_hidden test tries to use `chflags` on darwin
   checkFlagsArray = lib.optionals stdenv.isDarwin [ "--skip=subcommand::torrent::create::tests::include_hidden" ];
 
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    installShellCompletion --cmd imdl \
+      --bash <($out/bin/imdl completions bash) \
+      --fish <($out/bin/imdl completions fish) \
+      --zsh  <($out/bin/imdl completions zsh)
+  '';
+
   meta = with lib; {
     description = "User-friendly and featureful command-line BitTorrent metainfo utility";
     homepage = "https://github.com/casey/intermodal";