diff --git a/google/devtools/testing/v1/test_execution.proto b/google/devtools/testing/v1/test_execution.proto
index 5a1e15d8d..f03d07dc5 100644
--- a/google/devtools/testing/v1/test_execution.proto
+++ b/google/devtools/testing/v1/test_execution.proto
@@ -252,7 +252,7 @@ message TestSpecification {
 message SystraceSetup {
   // Systrace duration in seconds.
   // Should be between 1 and 30 seconds. 0 disables systrace.
-  int32 duration_seconds = 1;
+  int32 duration_seconds = 1 [deprecated = true];
 }
 
 // A description of how to set up the Android device prior to running the test.
@@ -287,14 +287,10 @@ message TestSetup {
   // instrumentation tests).
   repeated EnvironmentVariable environment_variables = 6;
 
-  // Deprecated: Systrace uses Python 2 which has been sunset 2020-01-01.
-  // Support of Systrace may stop at any time, at which point no Systrace file
-  // will be provided in the results.
-  //
   // Systrace configuration for the run.
-  // If set a systrace will be taken, starting on test start and lasting for the
-  // configured duration. The systrace file thus obtained is put in the results
-  // bucket together with the other artifacts from the run.
+  // Deprecated: Systrace used Python 2 which was sunsetted on 2020-01-01.
+  // Systrace is no longer supported in the Cloud Testing API, and no Systrace
+  // file will be provided in the results.
   SystraceSetup systrace = 9 [deprecated = true];
 
   // Whether to prevent all runtime permissions to be granted at app install