diff --git a/go/chromite/api/android.pb.go b/go/chromite/api/android.pb.go
index ccde985..b425b46 100644
--- a/go/chromite/api/android.pb.go
+++ b/go/chromite/api/android.pb.go
@@ -76,7 +76,8 @@
 	// Force set the android build id that will be used.
 	AndroidVersion string `protobuf:"bytes,5,opt,name=android_version,json=androidVersion,proto3" json:"android_version,omitempty"`
 	// Android GTS branch to copy artifacts from.
-	AndroidGtsBuildBranch string `protobuf:"bytes,6,opt,name=android_gts_build_branch,json=androidGtsBuildBranch,proto3" json:"android_gts_build_branch,omitempty"`
+	// Deprecated.
+	AndroidGtsBuildBranch string `protobuf:"bytes,6,opt,name=android_gts_build_branch,json=androidGtsBuildBranch,proto3" json:"android_gts_build_branch,omitempty"` // Deprecated: Do not use.
 	// The set of relevant build targets. Used to clean old version and for a
 	// emerge-able sanity check for the new version.
 	// Recommended.
@@ -146,6 +147,7 @@
 	return ""
 }
 
+// Deprecated: Do not use.
 func (m *MarkStableRequest) GetAndroidGtsBuildBranch() string {
 	if m != nil {
 		return m.AndroidGtsBuildBranch
@@ -291,43 +293,43 @@
 func init() { proto.RegisterFile("chromite/api/android.proto", fileDescriptor_f74c095a284c1bd1) }
 
 var fileDescriptor_f74c095a284c1bd1 = []byte{
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+	// 567 bytes of a gzipped FileDescriptorProto
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 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/src/chromite/api/android.proto b/src/chromite/api/android.proto
index d291416..1274d25 100644
--- a/src/chromite/api/android.proto
+++ b/src/chromite/api/android.proto
@@ -22,7 +22,8 @@
   // Force set the android build id that will be used.
   string android_version = 5;
   // Android GTS branch to copy artifacts from.
-  string android_gts_build_branch = 6;
+  // Deprecated.
+  string android_gts_build_branch = 6 [deprecated = true];
   // The set of relevant build targets. Used to clean old version and for a
   // emerge-able sanity check for the new version.
   // Recommended.