diff --git a/bot.py b/bot.py
index 85438f2..e7747cc 100644
--- a/bot.py
+++ b/bot.py
@@ -1497,6 +1497,10 @@ class Bot:
         safe = re.sub(r"\[([^\]]+)\]\(([^)]+)\)", _link_repl, safe)
         # Bare URLs (not already in an <a> tag)
         safe = re.sub(r'(?<!href=")(?<!">)(https?://[^\s<]+)', r'<a href="\1">\1</a>', safe)
+        # Headings (### before ## before # to match longest first)
+        safe = re.sub(r"^### (.+)$", r"<h3>\1</h3>", safe, flags=re.MULTILINE)
+        safe = re.sub(r"^## (.+)$", r"<h2>\1</h2>", safe, flags=re.MULTILINE)
+        safe = re.sub(r"^# (.+)$", r"<h1>\1</h1>", safe, flags=re.MULTILINE)
         # Line breaks
         safe = safe.replace("\n", "<br/>")
         return safe