diff --git a/markdown.md b/markdown.md
index 1ba1c8885..de9f2f998 100644
--- a/markdown.md
+++ b/markdown.md
@@ -43,6 +43,15 @@ _italic_
 __bold__
 ```
 
+```markdown
+***bold italic***
+___bold italic___
+```
+
+```markdown
+~~strikethrough~~
+```
+
 ```markdown
 `code`
 ```