diff --git a/changelogs/client_server/newsfragments/2028.new b/changelogs/client_server/newsfragments/2028.new
new file mode 100644
index 000000000..718ee7550
--- /dev/null
+++ b/changelogs/client_server/newsfragments/2028.new
@@ -0,0 +1 @@
+Add `POST /_matrix/client/v3/rooms/{roomId}/report` as per [MSC4151](https://github.com/matrix-org/matrix-spec-proposals/pull/4151).
diff --git a/content/client-server-api/modules/report_content.md b/content/client-server-api/modules/report_content.md
index 651b09395..6f34e938b 100644
--- a/content/client-server-api/modules/report_content.md
+++ b/content/client-server-api/modules/report_content.md
@@ -25,7 +25,7 @@ be legitimate.
 verify that the reporting user is currently joined to the room the event
 is in before accepting a report.
 
-{{% added-in v="1.12" %}} Contrarily, servers MUST NOT restrict room reports
+{{% added-in v="1.13" %}} Contrarily, servers MUST NOT restrict room reports
 based on whether or not the reporting user is joined to the room. This is
 because users can be exposed to harmful content without being joined to a
 room. For instance, through room directories or invites.
diff --git a/data/api/client-server/report_content.yaml b/data/api/client-server/report_content.yaml
index b83540904..654784ca9 100644
--- a/data/api/client-server/report_content.yaml
+++ b/data/api/client-server/report_content.yaml
@@ -18,7 +18,7 @@ info:
 paths:
   "/rooms/{roomId}/report":
     post:
-      x-addedInMatrixVersion: "1.12"
+      x-addedInMatrixVersion: "1.13"
       summary: Report a room as inappropriate.
       description: |-
         Reports a room as inappropriate to the server, which may then notify