diff --git a/api/client/size/list_size_reservations_responses.go b/api/client/size/list_size_reservations_responses.go
index 33be496..c334147 100644
--- a/api/client/size/list_size_reservations_responses.go
+++ b/api/client/size/list_size_reservations_responses.go
@@ -87,11 +87,11 @@ func (o *ListSizeReservationsOK) Code() int {
 }
 
 func (o *ListSizeReservationsOK) Error() string {
-	return fmt.Sprintf("[GET /v1/size/reservations][%d] listSizeReservationsOK  %+v", 200, o.Payload)
+	return fmt.Sprintf("[POST /v1/size/reservations][%d] listSizeReservationsOK  %+v", 200, o.Payload)
 }
 
 func (o *ListSizeReservationsOK) String() string {
-	return fmt.Sprintf("[GET /v1/size/reservations][%d] listSizeReservationsOK  %+v", 200, o.Payload)
+	return fmt.Sprintf("[POST /v1/size/reservations][%d] listSizeReservationsOK  %+v", 200, o.Payload)
 }
 
 func (o *ListSizeReservationsOK) GetPayload() []*models.V1SizeReservationResponse {
@@ -157,11 +157,11 @@ func (o *ListSizeReservationsDefault) Code() int {
 }
 
 func (o *ListSizeReservationsDefault) Error() string {
-	return fmt.Sprintf("[GET /v1/size/reservations][%d] listSizeReservations default  %+v", o._statusCode, o.Payload)
+	return fmt.Sprintf("[POST /v1/size/reservations][%d] listSizeReservations default  %+v", o._statusCode, o.Payload)
 }
 
 func (o *ListSizeReservationsDefault) String() string {
-	return fmt.Sprintf("[GET /v1/size/reservations][%d] listSizeReservations default  %+v", o._statusCode, o.Payload)
+	return fmt.Sprintf("[POST /v1/size/reservations][%d] listSizeReservations default  %+v", o._statusCode, o.Payload)
 }
 
 func (o *ListSizeReservationsDefault) GetPayload() *httperrors.HTTPErrorResponse {
diff --git a/api/client/size/size_client.go b/api/client/size/size_client.go
index ee9f211..8489ae6 100644
--- a/api/client/size/size_client.go
+++ b/api/client/size/size_client.go
@@ -209,7 +209,7 @@ func (a *Client) ListSizeReservations(params *ListSizeReservationsParams, authIn
 	}
 	op := &runtime.ClientOperation{
 		ID:                 "listSizeReservations",
-		Method:             "GET",
+		Method:             "POST",
 		PathPattern:        "/v1/size/reservations",
 		ProducesMediaTypes: []string{"application/json"},
 		ConsumesMediaTypes: []string{"application/json"},
diff --git a/metal-api.json b/metal-api.json
index 9b4f4a9..551f2cd 100644
--- a/metal-api.json
+++ b/metal-api.json
@@ -8935,7 +8935,7 @@
       }
     },
     "/v1/size/reservations": {
-      "get": {
+      "post": {
         "consumes": [
           "application/json"
         ],