diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 935a29c3fc09..24b62cdda7c8 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16470,7 +16470,7 @@ with pkgs;
 
   rman = callPackage ../development/tools/misc/rman { };
 
-  rnix-lsp = callPackage ../development/tools/rnix-lsp { };
+  rnix-lsp = callPackage ../development/tools/rnix-lsp { nix = nixVersions.nix_2_9; };
 
   rnginline = with python3Packages; toPythonApplication rnginline;