diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index be2205e18d..2a04fb938c 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v1431
\ No newline at end of file
+v1432
\ No newline at end of file
diff --git a/types/Checkout/SessionsResource.d.ts b/types/Checkout/SessionsResource.d.ts
index a9be557fd3..189c3e7cc1 100644
--- a/types/Checkout/SessionsResource.d.ts
+++ b/types/Checkout/SessionsResource.d.ts
@@ -2253,6 +2253,8 @@ declare module 'stripe' {
         interface PhoneNumberCollection {
           /**
            * Set to `true` to enable phone number collection.
+           *
+           * Can only be set in `payment` and `subscription` mode.
            */
           enabled: boolean;
         }