diff --git a/test/resources/php-markdown.mdtest/Inline HTML (Simple).html b/test/resources/php-markdown.mdtest/Inline HTML (Simple).html
index 1451d62..efb6763 100644
--- a/test/resources/php-markdown.mdtest/Inline HTML (Simple).html	
+++ b/test/resources/php-markdown.mdtest/Inline HTML (Simple).html	
@@ -14,6 +14,13 @@
 <hr class="foo"
     id="bar" >
 
+<p>Details and Summary:</p>
+
+<details>
+  <summary>Some details</summary>
+  <p>More info about the details.</p>
+</details>
+
 <p>Regression:</p>
 
 <pre>
diff --git a/test/resources/php-markdown.mdtest/Inline HTML (Simple).text b/test/resources/php-markdown.mdtest/Inline HTML (Simple).text
index 359b622..7b67dde 100644
--- a/test/resources/php-markdown.mdtest/Inline HTML (Simple).text	
+++ b/test/resources/php-markdown.mdtest/Inline HTML (Simple).text	
@@ -14,6 +14,13 @@ Hr's:
 <hr class="foo"
     id="bar" >
 
+Details and Summary:
+
+<details>
+  <summary>Some details</summary>
+  <p>More info about the details.</p>
+</details>
+
 Regression:
 
 <pre>