diff --git a/packages/google-container/protos/google/container/v1beta1/cluster_service.proto b/packages/google-container/protos/google/container/v1beta1/cluster_service.proto
index e3ee256d193..203b49d840a 100644
--- a/packages/google-container/protos/google/container/v1beta1/cluster_service.proto
+++ b/packages/google-container/protos/google/container/v1beta1/cluster_service.proto
@@ -5164,8 +5164,9 @@ message GatewayAPIConfig {
     // Gateway API support is disabled
     CHANNEL_DISABLED = 1;
 
+    // Deprecated: use CHANNEL_STANDARD instead.
     // Gateway API support is enabled, experimental CRDs are installed
-    CHANNEL_EXPERIMENTAL = 3;
+    CHANNEL_EXPERIMENTAL = 3 [deprecated = true];
 
     // Gateway API support is enabled, standard CRDs are installed
     CHANNEL_STANDARD = 4;
diff --git a/packages/google-container/protos/protos.json b/packages/google-container/protos/protos.json
index 8cb664888dd..8402126f866 100644
--- a/packages/google-container/protos/protos.json
+++ b/packages/google-container/protos/protos.json
@@ -11888,6 +11888,11 @@
                   },
                   "nested": {
                     "Channel": {
+                      "valuesOptions": {
+                        "CHANNEL_EXPERIMENTAL": {
+                          "deprecated": true
+                        }
+                      },
                       "values": {
                         "CHANNEL_UNSPECIFIED": 0,
                         "CHANNEL_DISABLED": 1,