diff --git a/init.lua b/init.lua
index f3973c9..87b8373 100644
--- a/init.lua
+++ b/init.lua
@@ -32,9 +32,9 @@ vim.keymap.set('n', 'ar', '<cmd>AngryReviewer<cr>')
 
 require("latex")
 require("plugins")
+require("format")
 require("plugins/statusline")
 require("plugins/catppuccin")
-require("plugins/black")
 require("plugins/FRC")
 require("plugins/lsp")
 
diff --git a/lua/plugins/black.lua b/lua/format.lua
similarity index 50%
rename from lua/plugins/black.lua
rename to lua/format.lua
index 0a84154..2a8f962 100644
--- a/lua/plugins/black.lua
+++ b/lua/format.lua
@@ -6,3 +6,12 @@ vim.api.nvim_create_autocmd('BufWritePost', {
 	group = 'black_on_save',
 	command = 'silent! !black -q <afile>',
 })
+
+-- run cargo fmt on save
+local cargo_on_save = vim.api.nvim_create_augroup('cargo_on_save', {
+	clear = true })
+vim.api.nvim_create_autocmd('BufWritePost', {
+	pattern = '*.rs',
+	group = 'cargo_on_save',
+	command = 'silent! !cargo fmt <afile>',
+})