diff --git a/doc/api/net.md b/doc/api/net.md
index 699b1ba4d573b8..17ef5c9d0cb9d6 100644
--- a/doc/api/net.md
+++ b/doc/api/net.md
@@ -1006,6 +1006,10 @@ Set the encoding for the socket as a [Readable Stream][]. See
 ### `socket.setKeepAlive([enable][, initialDelay])`
 <!-- YAML
 added: v0.1.92
+changes:
+  - version: v12.17.0
+    pr-url: https://github.com/nodejs/node/pull/32204
+    description: New defaults for `TCP_KEEPCNT` and `TCP_KEEPINTVL` socket options were added.
 -->
 
 * `enable` {boolean} **Default:** `false`
@@ -1020,6 +1024,12 @@ data packet received and the first keepalive probe. Setting `0` for
 `initialDelay` will leave the value unchanged from the default
 (or previous) setting.
 
+Enabling the keep-alive functionality will set the following socket options:
+- `SO_KEEPALIVE=1`
+- `TCP_KEEPIDLE=initialDelay`
+- `TCP_KEEPCNT=10`
+- `TCP_KEEPINTVL=1`
+
 ### `socket.setNoDelay([noDelay])`
 <!-- YAML
 added: v0.1.90