diff --git a/common/dev/default.nix b/common/dev/default.nix
index 0b9d6d5..15161ad 100644
--- a/common/dev/default.nix
+++ b/common/dev/default.nix
@@ -23,6 +23,7 @@
   environment.systemPackages = with pkgs; [
     harper # Grammar and spell checking language server
     mdbook # Building documentation locally
+    taplo  # Language server for TOML files
     # TODO: Add language-tool?
     # TODO: Add ltex? Might be Typst-specific since I don't write much LaTeX.
   ];