diff --git a/doc/api/async_context.md b/doc/api/async_context.md
index 20cf08c06b1..391ed4c5459 100644
--- a/doc/api/async_context.md
+++ b/doc/api/async_context.md
@@ -1,5 +1,7 @@
 # Asynchronous Context Tracking
 
+<!--introduced_in=v16.4.0-->
+
 > Stability: 2 - Stable
 
 <!-- source_link=lib/async_hooks.js -->
diff --git a/doc/api/webstreams.md b/doc/api/webstreams.md
index b90fc19b500..d99a66a7163 100644
--- a/doc/api/webstreams.md
+++ b/doc/api/webstreams.md
@@ -1,5 +1,7 @@
 # Web Streams API
 
+<!--introduced_in=v16.5.0-->
+
 > Stability: 1 - Experimental
 
 An implementation of the [WHATWG Streams Standard][].