diff --git a/pkgs/development/tools/rnix-lsp/default.nix b/pkgs/development/tools/rnix-lsp/default.nix
index 09c8531c938b..d5a6f962c013 100644
--- a/pkgs/development/tools/rnix-lsp/default.nix
+++ b/pkgs/development/tools/rnix-lsp/default.nix
@@ -1,21 +1,23 @@
-{ lib, fetchFromGitHub, rustPlatform }:
+{ lib, fetchFromGitHub, rustPlatform, nixUnstable }:
 
 rustPlatform.buildRustPackage rec {
   pname = "rnix-lsp";
-  version = "0.1.0";
+  version = "0.2.1";
 
   src = fetchFromGitHub {
     owner = "nix-community";
     repo = "rnix-lsp";
     rev = "v${version}";
-    sha256 = "0fy620c34kxl27sd62x9mj0555bcdmnmbsxavmyiwb497z1m9wnn";
+    sha256 = "sha256-54dtLkGAbQ4Sln/bs/sI0GaCbXyK8+vDD8QBgxaiCXg=";
   };
 
-  cargoSha256 = "1akapxrh38g44531r25dgik8y5qyy9y6zb031hg8v61px2ajs39s";
+  cargoSha256 = "sha256-Tw05eOIMJj+zX0fqtn6wJwolKNkYqfVuo/WO/WvYu2k=";
+
+  checkInputs = [ nixUnstable ];
 
   meta = with lib; {
     description = "A work-in-progress language server for Nix, with syntax checking and basic completion";
     license = licenses.mit;
-    maintainers = with maintainers; [ ];
+    maintainers = with maintainers; [ ma27 ];
   };
 }