diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01d4c3cca..153b24212 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 
 - Added `App.batch_update`
+- Added horizontal rule to Markdown
 
 ### Changed
 
diff --git a/examples/dictionary.css b/examples/dictionary.css
index 6bca8b9f5..151fa019d 100644
--- a/examples/dictionary.css
+++ b/examples/dictionary.css
@@ -8,9 +8,9 @@ Input {
 }
 
 #results {
-    width: auto;   
-    min-height: 100%;
-    padding: 0 1;    
+    width: 100%;
+    height: auto;
+
 }
 
 #results-container {
diff --git a/examples/dictionary.py b/examples/dictionary.py
index 737bcb283..6a6f84d42 100644
--- a/examples/dictionary.py
+++ b/examples/dictionary.py
@@ -7,11 +7,10 @@ try:
 except ImportError:
     raise ImportError("Please install httpx with 'pip install httpx' ")
 
-from rich.markdown import Markdown
 
 from textual.app import App, ComposeResult
 from textual.containers import Content
-from textual.widgets import Static, Input
+from textual.widgets import Input, Markdown
 
 
 class DictionaryApp(App):
@@ -21,7 +20,7 @@ class DictionaryApp(App):
 
     def compose(self) -> ComposeResult:
         yield Input(placeholder="Search for a word")
-        yield Content(Static(id="results"), id="results-container")
+        yield Content(Markdown(id="results"), id="results-container")
 
     def on_mount(self) -> None:
         """Called when app starts."""
@@ -35,7 +34,7 @@ class DictionaryApp(App):
             asyncio.create_task(self.lookup_word(message.value))
         else:
             # Clear the results
-            self.query_one("#results", Static).update()
+            await self.query_one("#results", Markdown).update("")
 
     async def lookup_word(self, word: str) -> None:
         """Looks up a word."""
@@ -45,7 +44,8 @@ class DictionaryApp(App):
 
         if word == self.query_one(Input).value:
             markdown = self.make_word_markdown(results)
-            self.query_one("#results", Static).update(Markdown(markdown))
+            self.log(markdown)
+            await self.query_one("#results", Markdown).update(markdown)
 
     def make_word_markdown(self, results: object) -> str:
         """Convert the results in to markdown."""
diff --git a/src/textual/widgets/_markdown.py b/src/textual/widgets/_markdown.py
index 50812dd9d..4c8bb5b16 100644
--- a/src/textual/widgets/_markdown.py
+++ b/src/textual/widgets/_markdown.py
@@ -198,6 +198,18 @@ class MarkdownH6(MarkdownHeader):
     """
 
 
+class MarkdownHorizontalRule(MarkdownBlock):
+    """A horizontal rule."""
+
+    DEFAULT_CSS = """
+    MarkdownHorizontalRule {
+        border-bottom: heavy $primary;
+        height: 1;
+        padding-top: 1;
+    }
+    """
+
+
 class MarkdownParagraph(MarkdownBlock):
     """A paragraph Markdown block."""
 
@@ -501,7 +513,7 @@ class Markdown(Widget):
             markdown = path.read_text(encoding="utf-8")
         except Exception:
             return False
-        await self.query("MarkdownBlock").remove()
+
         await self.update(markdown)
         return True
 
@@ -524,6 +536,8 @@ class Markdown(Widget):
             if token.type == "heading_open":
                 block_id += 1
                 stack.append(HEADINGS[token.tag](id=f"block{block_id}"))
+            elif token.type == "hr":
+                output.append(MarkdownHorizontalRule())
             elif token.type == "paragraph_open":
                 stack.append(MarkdownParagraph())
             elif token.type == "blockquote_open":
@@ -627,7 +641,10 @@ class Markdown(Widget):
         await self.post_message(
             Markdown.TableOfContentsUpdated(table_of_contents, sender=self)
         )
-        await self.mount(*output)
+        with self.app.batch_update():
+            await self.query("MarkdownBlock").remove()
+            await self.mount(*output)
+            self.refresh(layout=True)
 
 
 class MarkdownTableOfContents(Widget, can_focus_children=True):