diff --git a/users/simon/modules/neovim/default.nix b/users/simon/modules/neovim/default.nix
index 7c068f8..b05da78 100644
--- a/users/simon/modules/neovim/default.nix
+++ b/users/simon/modules/neovim/default.nix
@@ -89,6 +89,7 @@ in
       nvim-solarized-lua
       nvim-treesitter
       nvim-web-devicons
+      plantuml-syntax
       plenary-nvim
       rainbow_csv
       rust-vim