diff --git a/homes/aurora/default.nix b/homes/aurora/default.nix
index a41860c..f5df101 100644
--- a/homes/aurora/default.nix
+++ b/homes/aurora/default.nix
@@ -131,6 +131,7 @@
     zig
     elixir
     gleam
+    dotnet-sdk
     delta # git diff viewer
     tlrc # tldr rust client
     shellcheck
diff --git a/homes/modules/programs/neovim/lua/lsp/lsp.lua b/homes/modules/programs/neovim/lua/lsp/lsp.lua
index 33b7afa..1108aae 100644
--- a/homes/modules/programs/neovim/lua/lsp/lsp.lua
+++ b/homes/modules/programs/neovim/lua/lsp/lsp.lua
@@ -105,6 +105,12 @@ if nixCats("lang.java.lsp") then
 	}
 end
 
+if nixCats("lang.csharp.lsp") then
+	servers.roslyn_ls = {
+		settings = {},
+	}
+end
+
 if nixCats("lang.protobuf.lsp") then
 	servers.buf_ls = {
 		settings = {},
diff --git a/homes/modules/programs/neovim/lua/plugins/format.lua b/homes/modules/programs/neovim/lua/plugins/format.lua
index 636008b..1e5c7dd 100644
--- a/homes/modules/programs/neovim/lua/plugins/format.lua
+++ b/homes/modules/programs/neovim/lua/plugins/format.lua
@@ -71,6 +71,7 @@ return {
 						return formatters
 					end)(),
 					haskell = nixCats("lang.haskell.format") and { "ormolu" } or nil,
+					csharp = nixCats("lang.csharp.format") and { "csharpier" } or nil,
 					proto = nixCats("lang.protobuf.format") and { "buf" } or nil,
 					toml = nixCats("lang.toml.format") and { "taplo" } or nil,
 					sql = nixCats("lang.sql.format") and { "sqlfluff" } or nil,
diff --git a/homes/modules/programs/neovim/nixcats.nix b/homes/modules/programs/neovim/nixcats.nix
index 701aba7..0c2025c 100644
--- a/homes/modules/programs/neovim/nixcats.nix
+++ b/homes/modules/programs/neovim/nixcats.nix
@@ -94,6 +94,14 @@ in {
               ];
               # TODO: needs formatter field
             };
+            csharp = {
+              lsp = [
+                roslyn-ls
+              ];
+              format = [
+                csharpier
+              ];
+            };
             protobuf = {
               lsp = [buf];
               format = [buf];
@@ -301,6 +309,9 @@ in {
               java.lsp = true;
               java.format = true;
 
+              csharp.lsp = true;
+              csharp.format = true;
+
               protobuf.lsp = true;
               protobuf.format = true;