diff --git a/docs/src/languages/dart.md b/docs/src/languages/dart.md
index 6b7d01c39ea698ecf3f470d1ad2525569d95bbb1..9d008c4c2c3530af4bed7626c0e8cb1c7b400ec1 100644
--- a/docs/src/languages/dart.md
+++ b/docs/src/languages/dart.md
@@ -35,4 +35,20 @@ If you would like to use a specific dart binary or use dart via FVM you can spec
 }
 ```
 
+### Formatting
+
+Dart by-default uses a very conservative maximum line length (80). If you would like the dart LSP to permit a longer line length when auto-formatting, add the following to your Zed settings.json:
+
+```json
+{
+  "lsp": {
+    "dart": {
+      "settings": {
+        "lineLength": 140
+      }
+    }
+  }
+}
+```
+
 Please see the Dart documentation for more information on [dart language-server capabilities](https://github.com/dart-lang/sdk/blob/main/pkg/analysis_server/tool/lsp_spec/README.md).