diff --git a/ext/commonmarker/src/node.rs b/ext/commonmarker/src/node.rs
index fb644a8a..ac849f54 100644
--- a/ext/commonmarker/src/node.rs
+++ b/ext/commonmarker/src/node.rs
@@ -128,19 +128,25 @@ impl CommonmarkerNode {
             }
             "description_list" => ComrakNodeValue::DescriptionList,
             "description_item" => {
-                let kwargs = scan_args::get_kwargs::<_, (), (Option<usize>, Option<usize>), ()>(
-                    args.keywords,
-                    &[],
-                    &["marker_offset", "padding"],
+                let kwargs = scan_args::get_kwargs::<
+                    _,
+                    (),
+                    (Option<usize>, Option<usize>, Option<bool>),
+                    (),
+                >(
+                    args.keywords, &[], &["marker_offset", "padding", "tight"]
                 )?;
 
-                let (marker_offset, padding) = kwargs.optional;
+                let (marker_offset, padding, tight) = kwargs.optional;
 
                 ComrakNodeValue::DescriptionItem(NodeDescriptionItem {
                     // Number of spaces before the list marker.
                     marker_offset: marker_offset.unwrap_or(0),
                     // Number of characters between the start of the list marker and the item text (including the list marker(s)).
                     padding: padding.unwrap_or(0),
+                    // Whether the list is [tight](https://github.github.com/gfm/#tight), i.e. whether the
+                    // paragraphs are wrapped in `<p>` tags when formatted as HTML.
+                    tight: tight.unwrap_or(false),
                 })
             }
             "description_term" => ComrakNodeValue::DescriptionTerm,
diff --git a/test/extensions_test.rb b/test/extensions_test.rb
index 1eae6bcc..eb370dff 100644
--- a/test/extensions_test.rb
+++ b/test/extensions_test.rb
@@ -39,20 +39,18 @@ def test_comments_are_kept_as_expected
 
   def test_definition_lists
     markdown = <<~MARKDOWN
-      ~strikethrough disabled to ensure options accepted~
-
       Commonmark Definition
 
       : Ruby wrapper for comrak (CommonMark parser)
     MARKDOWN
 
-    extensions = { strikethrough: false, description_lists: true }
+    extensions = { description_lists: true }
     options = { extension: extensions, render: { hardbreaks: false } }
     output = Commonmarker.to_html(markdown, options: options)
 
     html = <<~HTML
-      <p>~strikethrough disabled to ensure options accepted~</p>
-      <dl><dt>Commonmark Definition</dt>
+      <dl>
+      <dt>Commonmark Definition</dt>
       <dd>
       <p>Ruby wrapper for comrak (CommonMark parser)</p>
       </dd>