diff --git a/source/_integrations/rpi_pfio.markdown b/source/_integrations/rpi_pfio.markdown
index 5ad00d8e064..7c9e85a46cf 100644
--- a/source/_integrations/rpi_pfio.markdown
+++ b/source/_integrations/rpi_pfio.markdown
@@ -13,6 +13,14 @@ ha_platforms:
   - switch
 ---
 
+<div class='note warning'>
+
+This integration is deprecated and will be removed in Home Assistant Core 2022.4.
+
+For more information see: [Architectural Decision Record 0019](https://github.com/home-assistant/architecture/blob/master/adr/0019-GPIO.md).
+
+</div>
+
 The `rpi_pfio` integration is the base for all related [PiFace Digital I/O (PFIO)](http://www.piface.org.uk/) platforms in Home Assistant. There is no setup needed for the integration itself; for the platforms, please check their corresponding pages.
 
 There is currently support for the following device types within Home Assistant: