diff --git a/doc/go_spec.html b/doc/go_spec.html
index bcb06e72ff..bb4a3f600c 100644
--- a/doc/go_spec.html
+++ b/doc/go_spec.html
@@ -1,6 +1,6 @@
 <!--{
 	"Title": "The Go Programming Language Specification",
-	"Subtitle": "Version of June 6, 2023",
+	"Subtitle": "Version of June 7, 2023",
 	"Path": "/ref/spec"
 }-->
 
@@ -4383,6 +4383,10 @@ For a generic type, all type arguments must always be provided explicitly.
 
 <h3 id="Type_inference">Type inference</h3>
 
+<p>
+<em>NOTE: This section is not yet up-to-date for Go 1.21.</em>
+</p>
+
 <p>
 Missing function type arguments may be <i>inferred</i> by a series of steps, described below.
 Each step attempts to use known information to infer additional type arguments.