diff --git a/MuxPhp/Api/AssetsApi.php b/MuxPhp/Api/AssetsApi.php
index 17e5cc9..8e7bc46 100644
--- a/MuxPhp/Api/AssetsApi.php
+++ b/MuxPhp/Api/AssetsApi.php
@@ -355,7 +355,7 @@ public function createAssetRequest($create_asset_request)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -646,7 +646,7 @@ public function createAssetPlaybackIdRequest($asset_id, $create_playback_id_requ
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -937,7 +937,7 @@ public function createAssetTrackRequest($asset_id, $create_track_request)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1163,7 +1163,7 @@ public function deleteAssetRequest($asset_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1408,7 +1408,7 @@ public function deleteAssetPlaybackIdRequest($asset_id, $playback_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1653,7 +1653,7 @@ public function deleteAssetTrackRequest($asset_id, $track_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1927,7 +1927,7 @@ public function getAssetRequest($asset_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2201,7 +2201,7 @@ public function getAssetInputInfoRequest($asset_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2494,7 +2494,7 @@ public function getAssetPlaybackIdRequest($asset_id, $playback_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2813,7 +2813,7 @@ public function listAssetsRequest($limit = 25, $page = 1, $live_stream_id = null
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -3104,7 +3104,7 @@ public function updateAssetRequest($asset_id, $update_asset_request)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -3395,7 +3395,7 @@ public function updateAssetMasterAccessRequest($asset_id, $update_asset_master_a
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -3686,7 +3686,7 @@ public function updateAssetMp4SupportRequest($asset_id, $update_asset_mp4_suppor
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/DeliveryUsageApi.php b/MuxPhp/Api/DeliveryUsageApi.php
index 393f72a..df5b305 100644
--- a/MuxPhp/Api/DeliveryUsageApi.php
+++ b/MuxPhp/Api/DeliveryUsageApi.php
@@ -418,7 +418,7 @@ public function listDeliveryUsageRequest($page = 1, $limit = 100, $asset_id = nu
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/DimensionsApi.php b/MuxPhp/Api/DimensionsApi.php
index 4b0b1a1..30cf1e2 100644
--- a/MuxPhp/Api/DimensionsApi.php
+++ b/MuxPhp/Api/DimensionsApi.php
@@ -421,7 +421,7 @@ public function listDimensionValuesRequest($dimension_id, $limit = 25, $page = 1
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -676,7 +676,7 @@ public function listDimensionsRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/DirectUploadsApi.php b/MuxPhp/Api/DirectUploadsApi.php
index b7a4f3d..d428345 100644
--- a/MuxPhp/Api/DirectUploadsApi.php
+++ b/MuxPhp/Api/DirectUploadsApi.php
@@ -357,7 +357,7 @@ public function cancelDirectUploadRequest($upload_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -629,7 +629,7 @@ public function createDirectUploadRequest($create_upload_request)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -903,7 +903,7 @@ public function getDirectUploadRequest($upload_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1190,7 +1190,7 @@ public function listDirectUploadsRequest($limit = 25, $page = 1)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/ErrorsApi.php b/MuxPhp/Api/ErrorsApi.php
index ce05461..af46949 100644
--- a/MuxPhp/Api/ErrorsApi.php
+++ b/MuxPhp/Api/ErrorsApi.php
@@ -370,7 +370,7 @@ public function listErrorsRequest($filters = null, $timeframe = null)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/ExportsApi.php b/MuxPhp/Api/ExportsApi.php
index b2c612c..0ba7a61 100644
--- a/MuxPhp/Api/ExportsApi.php
+++ b/MuxPhp/Api/ExportsApi.php
@@ -338,7 +338,7 @@ public function listExportsRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -593,7 +593,7 @@ public function listExportsViewsRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/FiltersApi.php b/MuxPhp/Api/FiltersApi.php
index 1b19b8e..6a2a119 100644
--- a/MuxPhp/Api/FiltersApi.php
+++ b/MuxPhp/Api/FiltersApi.php
@@ -421,7 +421,7 @@ public function listFilterValuesRequest($filter_id, $limit = 25, $page = 1, $fil
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -676,7 +676,7 @@ public function listFiltersRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/IncidentsApi.php b/MuxPhp/Api/IncidentsApi.php
index c8e2c11..9ef1b79 100644
--- a/MuxPhp/Api/IncidentsApi.php
+++ b/MuxPhp/Api/IncidentsApi.php
@@ -357,7 +357,7 @@ public function getIncidentRequest($incident_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -708,7 +708,7 @@ public function listIncidentsRequest($limit = 25, $page = 1, $order_by = null, $
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1046,7 +1046,7 @@ public function listRelatedIncidentsRequest($incident_id, $limit = 25, $page = 1
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/LiveStreamsApi.php b/MuxPhp/Api/LiveStreamsApi.php
index 1a0b3f0..2b69593 100644
--- a/MuxPhp/Api/LiveStreamsApi.php
+++ b/MuxPhp/Api/LiveStreamsApi.php
@@ -355,7 +355,7 @@ public function createLiveStreamRequest($create_live_stream_request)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -646,7 +646,7 @@ public function createLiveStreamPlaybackIdRequest($live_stream_id, $create_playb
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -937,7 +937,7 @@ public function createLiveStreamSimulcastTargetRequest($live_stream_id, $create_
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1163,7 +1163,7 @@ public function deleteLiveStreamRequest($live_stream_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1408,7 +1408,7 @@ public function deleteLiveStreamPlaybackIdRequest($live_stream_id, $playback_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1653,7 +1653,7 @@ public function deleteLiveStreamSimulcastTargetRequest($live_stream_id, $simulca
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1927,7 +1927,7 @@ public function disableLiveStreamRequest($live_stream_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2201,7 +2201,7 @@ public function enableLiveStreamRequest($live_stream_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2475,7 +2475,7 @@ public function getLiveStreamRequest($live_stream_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2768,7 +2768,7 @@ public function getLiveStreamPlaybackIdRequest($live_stream_id, $playback_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -3061,7 +3061,7 @@ public function getLiveStreamSimulcastTargetRequest($live_stream_id, $simulcast_
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -3380,7 +3380,7 @@ public function listLiveStreamsRequest($limit = 25, $page = 1, $stream_key = nul
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -3654,7 +3654,7 @@ public function resetStreamKeyRequest($live_stream_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -3928,7 +3928,7 @@ public function signalLiveStreamCompleteRequest($live_stream_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -4219,7 +4219,7 @@ public function updateLiveStreamRequest($live_stream_id, $update_live_stream_req
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -4510,7 +4510,7 @@ public function updateLiveStreamEmbeddedSubtitlesRequest($live_stream_id, $updat
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -4801,7 +4801,7 @@ public function updateLiveStreamGeneratedSubtitlesRequest($live_stream_id, $upda
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/MetricsApi.php b/MuxPhp/Api/MetricsApi.php
index 335862e..44c1905 100644
--- a/MuxPhp/Api/MetricsApi.php
+++ b/MuxPhp/Api/MetricsApi.php
@@ -437,7 +437,7 @@ public function getMetricTimeseriesDataRequest($metric_id, $timeframe = null, $f
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -759,7 +759,7 @@ public function getOverallValuesRequest($metric_id, $timeframe = null, $filters
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1078,7 +1078,7 @@ public function listAllMetricValuesRequest($timeframe = null, $filters = null, $
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1480,7 +1480,7 @@ public function listBreakdownValuesRequest($metric_id, $group_by = null, $measur
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1802,7 +1802,7 @@ public function listInsightsRequest($metric_id, $measurement = null, $order_dire
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/MonitoringApi.php b/MuxPhp/Api/MonitoringApi.php
index 2cce161..3edd6fa 100644
--- a/MuxPhp/Api/MonitoringApi.php
+++ b/MuxPhp/Api/MonitoringApi.php
@@ -437,7 +437,7 @@ public function getMonitoringBreakdownRequest($monitoring_metric_id, $dimension
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -807,7 +807,7 @@ public function getMonitoringBreakdownTimeseriesRequest($monitoring_metric_id, $
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1097,7 +1097,7 @@ public function getMonitoringHistogramTimeseriesRequest($monitoring_histogram_me
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1403,7 +1403,7 @@ public function getMonitoringTimeseriesRequest($monitoring_metric_id, $filters =
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1658,7 +1658,7 @@ public function listMonitoringDimensionsRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1913,7 +1913,7 @@ public function listMonitoringMetricsRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/PlaybackIDApi.php b/MuxPhp/Api/PlaybackIDApi.php
index 7f46eaa..3c6a5dd 100644
--- a/MuxPhp/Api/PlaybackIDApi.php
+++ b/MuxPhp/Api/PlaybackIDApi.php
@@ -357,7 +357,7 @@ public function getAssetOrLivestreamIdRequest($playback_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/PlaybackRestrictionsApi.php b/MuxPhp/Api/PlaybackRestrictionsApi.php
index 3043840..3672d2f 100644
--- a/MuxPhp/Api/PlaybackRestrictionsApi.php
+++ b/MuxPhp/Api/PlaybackRestrictionsApi.php
@@ -355,7 +355,7 @@ public function createPlaybackRestrictionRequest($create_playback_restriction_re
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -581,7 +581,7 @@ public function deletePlaybackRestrictionRequest($playback_restriction_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -855,7 +855,7 @@ public function getPlaybackRestrictionRequest($playback_restriction_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1142,7 +1142,7 @@ public function listPlaybackRestrictionsRequest($page = 1, $limit = 25)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1433,7 +1433,7 @@ public function updateReferrerDomainRestrictionRequest($playback_restriction_id,
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/RealTimeApi.php b/MuxPhp/Api/RealTimeApi.php
index bf14dc4..325120e 100644
--- a/MuxPhp/Api/RealTimeApi.php
+++ b/MuxPhp/Api/RealTimeApi.php
@@ -437,7 +437,7 @@ public function getRealtimeBreakdownRequest($realtime_metric_id, $dimension = nu
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -727,7 +727,7 @@ public function getRealtimeHistogramTimeseriesRequest($realtime_histogram_metric
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1033,7 +1033,7 @@ public function getRealtimeTimeseriesRequest($realtime_metric_id, $filters = nul
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1288,7 +1288,7 @@ public function listRealtimeDimensionsRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1543,7 +1543,7 @@ public function listRealtimeMetricsRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/SigningKeysApi.php b/MuxPhp/Api/SigningKeysApi.php
index 9c8af8a..231d03e 100644
--- a/MuxPhp/Api/SigningKeysApi.php
+++ b/MuxPhp/Api/SigningKeysApi.php
@@ -338,7 +338,7 @@ public function createSigningKeyRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -564,7 +564,7 @@ public function deleteSigningKeyRequest($signing_key_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -838,7 +838,7 @@ public function getSigningKeyRequest($signing_key_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1125,7 +1125,7 @@ public function listSigningKeysRequest($limit = 25, $page = 1)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/SpacesApi.php b/MuxPhp/Api/SpacesApi.php
index aba2d80..cfcc4e2 100644
--- a/MuxPhp/Api/SpacesApi.php
+++ b/MuxPhp/Api/SpacesApi.php
@@ -355,7 +355,7 @@ public function createSpaceRequest($create_space_request)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -646,7 +646,7 @@ public function createSpaceBroadcastRequest($space_id, $create_broadcast_request
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -872,7 +872,7 @@ public function deleteSpaceRequest($space_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1117,7 +1117,7 @@ public function deleteSpaceBroadcastRequest($space_id, $broadcast_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1391,7 +1391,7 @@ public function getSpaceRequest($space_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1684,7 +1684,7 @@ public function getSpaceBroadcastRequest($space_id, $broadcast_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1971,7 +1971,7 @@ public function listSpacesRequest($limit = 25, $page = 1)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2264,7 +2264,7 @@ public function startSpaceBroadcastRequest($space_id, $broadcast_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2557,7 +2557,7 @@ public function stopSpaceBroadcastRequest($space_id, $broadcast_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/TranscriptionVocabulariesApi.php b/MuxPhp/Api/TranscriptionVocabulariesApi.php
index 1414cad..0fb73da 100644
--- a/MuxPhp/Api/TranscriptionVocabulariesApi.php
+++ b/MuxPhp/Api/TranscriptionVocabulariesApi.php
@@ -355,7 +355,7 @@ public function createTranscriptionVocabularyRequest($create_transcription_vocab
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -581,7 +581,7 @@ public function deleteTranscriptionVocabularyRequest($transcription_vocabulary_i
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -855,7 +855,7 @@ public function getTranscriptionVocabularyRequest($transcription_vocabulary_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1146,7 +1146,7 @@ public function listTranscriptionVocabulariesRequest($limit = 10, $page = 1)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1437,7 +1437,7 @@ public function updateTranscriptionVocabularyRequest($transcription_vocabulary_i
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/URLSigningKeysApi.php b/MuxPhp/Api/URLSigningKeysApi.php
index 4435c72..59c14aa 100644
--- a/MuxPhp/Api/URLSigningKeysApi.php
+++ b/MuxPhp/Api/URLSigningKeysApi.php
@@ -338,7 +338,7 @@ public function createUrlSigningKeyRequest()
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -564,7 +564,7 @@ public function deleteUrlSigningKeyRequest($signing_key_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -838,7 +838,7 @@ public function getUrlSigningKeyRequest($signing_key_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1125,7 +1125,7 @@ public function listUrlSigningKeysRequest($limit = 25, $page = 1)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/VideoViewsApi.php b/MuxPhp/Api/VideoViewsApi.php
index ff9e6a9..c68ceb1 100644
--- a/MuxPhp/Api/VideoViewsApi.php
+++ b/MuxPhp/Api/VideoViewsApi.php
@@ -357,7 +357,7 @@ public function getVideoViewRequest($video_view_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -724,7 +724,7 @@ public function listVideoViewsRequest($limit = 25, $page = 1, $viewer_id = null,
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/MuxPhp/Api/WebInputsApi.php b/MuxPhp/Api/WebInputsApi.php
index c7b9dec..7260572 100644
--- a/MuxPhp/Api/WebInputsApi.php
+++ b/MuxPhp/Api/WebInputsApi.php
@@ -355,7 +355,7 @@ public function createWebInputRequest($create_web_input_request)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -581,7 +581,7 @@ public function deleteWebInputRequest($web_input_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -855,7 +855,7 @@ public function getWebInputRequest($web_input_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1129,7 +1129,7 @@ public function launchWebInputRequest($web_input_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1416,7 +1416,7 @@ public function listWebInputsRequest($limit = 25, $page = 1)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1690,7 +1690,7 @@ public function reloadWebInputRequest($web_input_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -1964,7 +1964,7 @@ public function shutdownWebInputRequest($web_input_id)
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
@@ -2255,7 +2255,7 @@ public function updateWebInputUrlRequest($web_input_id, $update_web_input_url_re
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }
 
diff --git a/gen/templates/api.mustache b/gen/templates/api.mustache
index 058b251..42b4b04 100644
--- a/gen/templates/api.mustache
+++ b/gen/templates/api.mustache
@@ -591,7 +591,7 @@ use {{invokerPackage}}\ObjectSerializer;
 
             } else {
                 // for HTTP post (form)
-                $httpBody = \GuzzleHttp\Psr7\build_query($formParams);
+                $httpBody = \GuzzleHttp\Psr7\query($formParams);
             }
         }