diff --git a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/customization/APIGW_exports_nullability_exceptions.json b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/customization/APIGW_exports_nullability_exceptions.json
index d09a1645837..632328770c3 100644
--- a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/customization/APIGW_exports_nullability_exceptions.json
+++ b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/customization/APIGW_exports_nullability_exceptions.json
@@ -542,7 +542,13 @@
     "com.amazonaws.mediaconnect#MediaConnect": [
         "com.amazonaws.mediaconnect#__double",
         "com.amazonaws.mediaconnect#__integer",
-	"com.amazonaws.mediaconnect#__listOf__integer$member",
+        "com.amazonaws.mediaconnect#__listOf__integer$member",
+        "com.amazonaws.mediaconnect#AddBridgeNetworkOutputRequest$Port",
+        "com.amazonaws.mediaconnect#AddBridgeNetworkOutputRequest$Ttl",
+        "com.amazonaws.mediaconnect#AddBridgeNetworkSourceRequest$Port",
+        "com.amazonaws.mediaconnect#AddEgressGatewayBridgeRequest$MaxBitrate",
+        "com.amazonaws.mediaconnect#AddIngressGatewayBridgeRequest$MaxBitrate",
+        "com.amazonaws.mediaconnect#AddIngressGatewayBridgeRequest$MaxOutputs",
         "com.amazonaws.mediaconnect#AddMediaStreamRequest$ClockRate",
         "com.amazonaws.mediaconnect#AddMediaStreamRequest$MediaStreamId",
         "com.amazonaws.mediaconnect#AddOutputRequest$MaxLatency",
@@ -550,20 +556,30 @@
         "com.amazonaws.mediaconnect#AddOutputRequest$Port",
         "com.amazonaws.mediaconnect#AddOutputRequest$SenderControlPort",
         "com.amazonaws.mediaconnect#AddOutputRequest$SmoothingLatency",
+        "com.amazonaws.mediaconnect#BridgeNetworkOutput$Port",
+        "com.amazonaws.mediaconnect#BridgeNetworkOutput$Ttl",
+        "com.amazonaws.mediaconnect#BridgeNetworkSource$Port",
         "com.amazonaws.mediaconnect#DestinationConfiguration$DestinationPort",
         "com.amazonaws.mediaconnect#DestinationConfigurationRequest$DestinationPort",
+        "com.amazonaws.mediaconnect#EgressGatewayBridge$MaxBitrate",
         "com.amazonaws.mediaconnect#EncodingParameters$CompressionFactor",
         "com.amazonaws.mediaconnect#EncodingParametersRequest$CompressionFactor",
         "com.amazonaws.mediaconnect#Entitlement$DataTransferSubscriberFeePercent",
         "com.amazonaws.mediaconnect#FailoverConfig$RecoveryWindow",
+        "com.amazonaws.mediaconnect#GatewayInstance$RunningBridgeCount",
         "com.amazonaws.mediaconnect#GrantEntitlementRequest$DataTransferSubscriberFeePercent",
+        "com.amazonaws.mediaconnect#IngressGatewayBridge$MaxBitrate",
+        "com.amazonaws.mediaconnect#IngressGatewayBridge$MaxOutputs",
         "com.amazonaws.mediaconnect#InputConfiguration$InputPort",
         "com.amazonaws.mediaconnect#InputConfigurationRequest$InputPort",
-        "com.amazonaws.mediaconnect#ListedEntitlement$DataTransferSubscriberFeePercent",
+        "com.amazonaws.mediaconnect#ListBridgesRequest$MaxResults",
         "com.amazonaws.mediaconnect#ListEntitlementsRequest$MaxResults",
         "com.amazonaws.mediaconnect#ListFlowsRequest$MaxResults",
+        "com.amazonaws.mediaconnect#ListGatewayInstancesRequest$MaxResults",
+        "com.amazonaws.mediaconnect#ListGatewaysRequest$MaxResults",
         "com.amazonaws.mediaconnect#ListOfferingsRequest$MaxResults",
         "com.amazonaws.mediaconnect#ListReservationsRequest$MaxResults",
+        "com.amazonaws.mediaconnect#ListedEntitlement$DataTransferSubscriberFeePercent",
         "com.amazonaws.mediaconnect#MaxResults",
         "com.amazonaws.mediaconnect#MediaStream$ClockRate",
         "com.amazonaws.mediaconnect#MediaStream$Fmt",
@@ -590,6 +606,10 @@
         "com.amazonaws.mediaconnect#Transport$SenderControlPort",
         "com.amazonaws.mediaconnect#Transport$SmoothingLatency",
         "com.amazonaws.mediaconnect#Transport$SourceListenerPort",
+        "com.amazonaws.mediaconnect#UpdateBridgeNetworkOutputRequest$Port",
+        "com.amazonaws.mediaconnect#UpdateBridgeNetworkOutputRequest$Ttl",
+        "com.amazonaws.mediaconnect#UpdateBridgeNetworkSourceRequest$Port",
+        "com.amazonaws.mediaconnect#UpdateEgressGatewayBridgeRequest$MaxBitrate",
         "com.amazonaws.mediaconnect#UpdateFailoverConfig$RecoveryWindow",
         "com.amazonaws.mediaconnect#UpdateFlowMediaStreamRequest$ClockRate",
         "com.amazonaws.mediaconnect#UpdateFlowOutputRequest$MaxLatency",
@@ -604,8 +624,13 @@
         "com.amazonaws.mediaconnect#UpdateFlowSourceRequest$MinLatency",
         "com.amazonaws.mediaconnect#UpdateFlowSourceRequest$SenderControlPort",
         "com.amazonaws.mediaconnect#UpdateFlowSourceRequest$SourceListenerPort",
+        "com.amazonaws.mediaconnect#UpdateIngressGatewayBridgeRequest$MaxBitrate",
+        "com.amazonaws.mediaconnect#UpdateIngressGatewayBridgeRequest$MaxOutputs",
+        "smithy.go.synthetic#ListBridgesInput$MaxResults",
         "smithy.go.synthetic#ListEntitlementsInput$MaxResults",
         "smithy.go.synthetic#ListFlowsInput$MaxResults",
+        "smithy.go.synthetic#ListGatewayInstancesInput$MaxResults",
+        "smithy.go.synthetic#ListGatewaysInput$MaxResults",
         "smithy.go.synthetic#ListOfferingsInput$MaxResults",
         "smithy.go.synthetic#ListReservationsInput$MaxResults",
         "smithy.go.synthetic#UpdateFlowMediaStreamInput$ClockRate",