diff --git a/proto/connections/offline_wire_formats.proto b/proto/connections/offline_wire_formats.proto
index 97bf965c..1ab232b5 100644
--- a/proto/connections/offline_wire_formats.proto
+++ b/proto/connections/offline_wire_formats.proto
@@ -298,6 +298,8 @@ message MediumMetadata {
   optional int32 ap_frequency = 6 [default = -1];
   // Available channels on the local device.
   optional AvailableChannels available_channels = 7;
+  // Usable WiFi Direct client channels on the local device.
+  optional WifiDirectCliUsableChannels wifi_direct_cli_usable_channels = 8;
 }
 
 // Available channels on the local device.
@@ -305,6 +307,11 @@ message AvailableChannels {
   repeated int32 channels = 1 [packed = true];
 }
 
+// Usable WiFi Direct client channels on the local device.
+message WifiDirectCliUsableChannels {
+  repeated int32 channels = 1 [packed = true];
+}
+
 // LocationHint is used to specify a location as well as format.
 message LocationHint {
   // Location is the location, provided in the format specified by format.