Fix button not disabling

app.py

@@ -67,7 +67,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
 
     out = gr.Textbox(label="Output", lines=25, autoscroll=True, interactive=False)
 
-    tdocs_btn.click(index_tdocs, outputs=[out])
-    spec_btn.click(index_specifications, outputs=[out])
+    tdocs_btn.click(index_tdocs, outputs=[tdocs_btn, spec_btn, out])
+    spec_btn.click(index_specifications, outputs=[tdocs_btn, spec_btn, out])
 
 demo.queue().launch()