diff --git a/libcxx/docs/ReleaseNotes.rst b/libcxx/docs/ReleaseNotes.rst
index 0454cfa3dbc367..9a77a5c23f30bb 100644
--- a/libcxx/docs/ReleaseNotes.rst
+++ b/libcxx/docs/ReleaseNotes.rst
@@ -5,7 +5,7 @@
     :hidden:
 
     ReleaseNotes/18
-    ReleaseNotes/20
+    ReleaseNotes/19
 
 .. The release notes are in versioned files, but we make sure to keep publishing
 .. them in an unversioned ReleaseNotes.html page for external sites to reference.