diff --git a/pydance/package.json b/pydance/package.json
index 59a9e93..f65d9f4 100644
--- a/pydance/package.json
+++ b/pydance/package.json
@@ -31,7 +31,18 @@
                     ".py"
                 ]
             }
-        ]
+        ],
+        "configuration": {
+            "title": "Pydance",
+            "properties": {
+                "pydance.parser": {
+                    "type": "string",
+                    "default": "ruff",
+                    "enum": ["ruff", "tree-sitter"],
+                    "description": "Parser backend to use for Python code analysis"
+                }
+            }
+        }
     },
     "scripts": {
         "vscode:prepublish": "npm run compile",
diff --git a/pydance/src/extension.ts b/pydance/src/extension.ts
index 0c2dbc2..ba39314 100644
--- a/pydance/src/extension.ts
+++ b/pydance/src/extension.ts
@@ -16,10 +16,14 @@ export function activate(context: vscode.ExtensionContext) {
   const serverPath = context.asAbsolutePath(path.join("pylight"));
   outputChannel.appendLine(`Server path: ${serverPath}`);
 
+  // Get the parser configuration
+  const config = vscode.workspace.getConfiguration("pydance");
+  const parser = config.get<string>("parser", "ruff");
+  outputChannel.appendLine(`Using parser: ${parser}`);
   // If the extension is launched in debug mode then the debug server options are used
   const serverOptions: ServerOptions = {
-    run: { command: serverPath, args: [] },
-    debug: { command: serverPath, args: [] },
+    run: { command: serverPath, args: ["--parser", parser] },
+    debug: { command: serverPath, args: ["--parser", parser] },
   };
 
   // Options to control the language client