diff --git a/nvim/.config/nvim/lua/yock/set.lua b/nvim/.config/nvim/lua/yock/set.lua
index aeaf288..da1a29e 100644
--- a/nvim/.config/nvim/lua/yock/set.lua
+++ b/nvim/.config/nvim/lua/yock/set.lua
@@ -29,6 +29,12 @@ vim.g.mapleader = '\\'
 
 vim.opt.winborder = 'rounded'
 
+vim.filetype.add({
+  filename = {
+    Fastfile = 'ruby',
+  }
+})
+
 vim.api.nvim_command('filetype plugin on')
 
 vim.api.nvim_create_autocmd(