diff --git a/nix/base-system/flake.nix b/nix/base-system/flake.nix
index c41f083..6282111 100644
--- a/nix/base-system/flake.nix
+++ b/nix/base-system/flake.nix
@@ -194,6 +194,7 @@ EOF";
 				nvim-treesitter-parsers.promql
 				nvim-treesitter-parsers.nix
 				nvim-treesitter-parsers.hoon
+				nvim-treesitter-parsers.c_sharp
                 omnisharp-extended-lsp-nvim
                 #neotest-dotnet
                 nix-develop-nvim