diff --git a/changelog.d/13188.feature b/changelog.d/13188.feature
new file mode 100644
index 000000000000..4c39b74289dd
--- /dev/null
+++ b/changelog.d/13188.feature
@@ -0,0 +1 @@
+Improve validation of request bodies for the following client-server API endpoints: [`/account/password`](https://spec.matrix.org/v1.3/client-server-api/#post_matrixclientv3accountpassword), [`/account/password/email/requestToken`](https://spec.matrix.org/v1.3/client-server-api/#post_matrixclientv3accountpasswordemailrequesttoken), [`/account/deactivate`](https://spec.matrix.org/v1.3/client-server-api/#post_matrixclientv3accountdeactivate) and [`/account/3pid/email/requestToken`](https://spec.matrix.org/v1.3/client-server-api/#post_matrixclientv3account3pidemailrequesttoken).
diff --git a/changelog.d/13188.misc b/changelog.d/13188.misc
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index d26f3b8d04a4..000000000000
--- a/changelog.d/13188.misc
+++ /dev/null
@@ -1 +0,0 @@
-Improve validation of some account-related REST endpoints.