diff --git a/package.json b/package.json
index 3bd85b0..b3e6ae1 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
     "version": "1.7.5",
     "publisher": "EFanZh",
     "engines": {
-        "vscode": "^1.93.0"
+        "vscode": "^1.98.0"
     },
     "license": "MIT",
     "displayName": "Graphviz Preview",
diff --git a/projects/extension/src/preview-state.ts b/projects/extension/src/preview-state.ts
index 4f47273..a86e9f3 100644
--- a/projects/extension/src/preview-state.ts
+++ b/projects/extension/src/preview-state.ts
@@ -78,7 +78,7 @@ function createWebviewPanel(context: Context, document: TextDocument): WebviewPa
 
 export class PreviewState implements ChannelClient<ExtensionRequest, ExtensionResponse, WebviewRequest> {
     private readonly channel = new Channel<ExtensionRequest, ExtensionResponse, WebviewRequest, WebviewResponse>();
-    private readonly scheduler = new Scheduler(os.cpus().length); // TODO: Use `os.availableParallelism()`.
+    private readonly scheduler = new Scheduler(os.availableParallelism());
 
     private constructor(
         private readonly context: Context,