diff --git a/pkgs/development/tools/rye/default.nix b/pkgs/development/tools/rye/default.nix
index fb5cc68d9e70..409d7d1723ca 100644
--- a/pkgs/development/tools/rye/default.nix
+++ b/pkgs/development/tools/rye/default.nix
@@ -1,6 +1,7 @@
 { lib
 , rustPlatform
 , fetchFromGitHub
+, installShellFiles
 , pkg-config
 , openssl
 , stdenv
@@ -31,7 +32,7 @@ rustPlatform.buildRustPackage rec {
     OPENSSL_NO_VENDOR = 1;
   };
 
-  nativeBuildInputs = [ pkg-config ];
+  nativeBuildInputs = [ installShellFiles pkg-config ];
 
   buildInputs = [
     openssl
@@ -41,6 +42,13 @@ rustPlatform.buildRustPackage rec {
     SystemConfiguration
   ];
 
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+    installShellCompletion --cmd rye \
+      --bash <($out/bin/rye self completion -s bash) \
+      --fish <($out/bin/rye self completion -s fish) \
+      --zsh <($out/bin/rye self completion -s zsh)
+  '';
+
   checkFlags = [
     "--skip=utils::test_is_inside_git_work_tree"
   ];