diff --git a/lib/custom_widgets/markdown_config.dart b/lib/custom_widgets/markdown_config.dart
index 0864f69..687de29 100644
--- a/lib/custom_widgets/markdown_config.dart
+++ b/lib/custom_widgets/markdown_config.dart
@@ -90,6 +90,7 @@ class GptMarkdownConfig {
     this.imageBuilder,
     this.maxLines,
     this.overflow,
+    this.textWidthBasis,
     this.components,
     this.inlineComponents,
     this.tableBuilder,
@@ -137,6 +138,9 @@ class GptMarkdownConfig {
   /// The overflow.
   final TextOverflow? overflow;
 
+  /// The text width basis.
+  final TextWidthBasis? textWidthBasis;
+
   /// The highlight builder.
   final HighlightBuilder? highlightBuilder;
 
@@ -169,6 +173,7 @@ class GptMarkdownConfig {
     final CodeBlockBuilder? codeBuilder,
     final int? maxLines,
     final TextOverflow? overflow,
+    final TextWidthBasis? textWidthBasis,
     final HighlightBuilder? highlightBuilder,
     final LinkBuilder? linkBuilder,
     final ImageBuilder? imageBuilder,
@@ -211,6 +216,7 @@ class GptMarkdownConfig {
       textAlign: textAlign,
       maxLines: maxLines,
       overflow: overflow,
+      textWidthBasis: textWidthBasis,
     );
   }
 
diff --git a/lib/gpt_markdown.dart b/lib/gpt_markdown.dart
index 3ec7bdb..19da66e 100644
--- a/lib/gpt_markdown.dart
+++ b/lib/gpt_markdown.dart
@@ -38,6 +38,7 @@ class GptMarkdown extends StatelessWidget {
     this.linkBuilder,
     this.maxLines,
     this.overflow,
+    this.textWidthBasis,
     this.orderedListBuilder,
     this.unOrderedListBuilder,
     this.tableBuilder,
@@ -71,6 +72,9 @@ class GptMarkdown extends StatelessWidget {
   /// The overflow.
   final TextOverflow? overflow;
 
+  /// The text width basis.
+  final TextWidthBasis? textWidthBasis;
+
   /// The LaTeX builder.
   final LatexBuilder? latexBuilder;
 
@@ -198,6 +202,7 @@ class GptMarkdown extends StatelessWidget {
           codeBuilder: codeBuilder,
           maxLines: maxLines,
           overflow: overflow,
+          textWidthBasis: textWidthBasis,
           sourceTagBuilder: sourceTagBuilder,
           highlightBuilder: highlightBuilder,
           linkBuilder: linkBuilder,