diff --git a/TODOS.md b/TODOS.md
index 136f044..59db89c 100644
--- a/TODOS.md
+++ b/TODOS.md
@@ -3,7 +3,6 @@
   - Look at the source for 3 template languages that support mustache syntax,
   and see how they implement the tempaltes, then pick the best one. One of them
   should be Hugo / go.
-- [ ] robots.txt?
 - [ ] Evaluate Tufte CSS — borrow sidenote CSS or replace TailwindCSS entirely
   - Option B: Steal Tufte's sidenote/margin-note CSS (adapt for dark theme), keep TailwindCSS
   - Option C: Full Tufte CSS — drop TailwindCSS, no build step, semantic HTML, customize for dark theme + Roboto
diff --git a/render.odin b/render.odin
index b0b5bee..75c57cc 100644
--- a/render.odin
+++ b/render.odin
@@ -58,6 +58,10 @@ render_site :: proc(pages: []Page, content_path: string, output_dir: string, bas
 	// Copy static assets (avatar, favicon, etc.)
 	copy_static_assets(content_path, output_dir)
 
+	// Generate robots.txt
+	robots := fmt.aprintf("User-agent: *\nAllow: /\nSitemap: %s/sitemap.xml\n", base_url)
+	write_file(fmt.tprintf("%s/robots.txt", output_dir), robots)
+
 	total := len(pages) + 1
 	if !has_home {
 		total += 1