diff --git a/mixer/v1/attributes.proto b/mixer/v1/attributes.proto
index 615ad16ed2b..fb431912dfb 100644
--- a/mixer/v1/attributes.proto
+++ b/mixer/v1/attributes.proto
@@ -106,7 +106,7 @@ message Attributes {
   map<int32, google.protobuf.Timestamp> timestamp_attributes = 8 [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
   map<int32, google.protobuf.Duration> duration_attributes = 9 [(gogoproto.nullable) = false, (gogoproto.stdduration) = true];
   map<int32, bytes> bytes_attributes = 10;
-  map<int32, StringMap> stringMap_attributes = 11;
+  map<int32, StringMap> stringMap_attributes = 11 [(gogoproto.nullable) = false];
 
   // Attributes that should be removed from the specified attribute context. Deleting
   // attributes which aren't currently in the attribute context is not considered an error.
diff --git a/mixer/v1/check.proto b/mixer/v1/check.proto
index 746b683a62a..6783cc81bca 100644
--- a/mixer/v1/check.proto
+++ b/mixer/v1/check.proto
@@ -38,9 +38,12 @@ message CheckResponse {
   // Index of the request this response is associated with
   int64 request_index = 1;
 
+  // The attributes to use for this response
+  Attributes attribute_update = 2;
+
   // Indicates whether or not the preconditions succeeded
-  google.rpc.Status result = 2 [(gogoproto.nullable) = false];
+  google.rpc.Status result = 3 [(gogoproto.nullable) = false];
 
   // The amount of time for which this result can be considered valid, given the same inputs
-  google.protobuf.Duration expiration = 3 [(gogoproto.nullable) = false, (gogoproto.stdduration) = true];
+  google.protobuf.Duration expiration = 4 [(gogoproto.nullable) = false, (gogoproto.stdduration) = true];
 }
diff --git a/mixer/v1/quota.proto b/mixer/v1/quota.proto
index 47977ed6e20..0238f7a31af 100644
--- a/mixer/v1/quota.proto
+++ b/mixer/v1/quota.proto
@@ -53,12 +53,15 @@ message QuotaResponse {
   // Index of the request this response is associated with.
   int64 request_index = 1;
 
+  // The attributes to use for this response
+  Attributes attribute_update = 2;
+
   // Indicates whether the quota request was successfully processed.
-  google.rpc.Status result = 2 [(gogoproto.nullable) = false];
+  google.rpc.Status result = 3 [(gogoproto.nullable) = false];
 
   // The amount of time the returned quota can be considered valid, this is 0 for non-expiring quotas.
-  google.protobuf.Duration expiration = 3 [(gogoproto.nullable) = false, (gogoproto.stdduration) = true];
+  google.protobuf.Duration expiration = 4 [(gogoproto.nullable) = false, (gogoproto.stdduration) = true];
 
   // The total amount of quota returned, may be less than requested.
-  int64 amount = 4;
+  int64 amount = 5;
 }
diff --git a/mixer/v1/report.proto b/mixer/v1/report.proto
index 2c06d728994..d5530b7c7fb 100644
--- a/mixer/v1/report.proto
+++ b/mixer/v1/report.proto
@@ -37,6 +37,9 @@ message ReportResponse {
   // Index of the request this response is associated with
   int64 request_index = 1;
 
+  // The attributes to use for this response
+  Attributes attribute_update = 2;
+
   // Indicates whether the report was processed or not
-  google.rpc.Status result = 2 [(gogoproto.nullable) = false];
+  google.rpc.Status result = 3 [(gogoproto.nullable) = false];
 }