diff --git a/tools/run_tests/performance/bq_upload_result.py b/tools/run_tests/performance/bq_upload_result.py
index cb734efb7281b5..1e582a74f22065 100755
--- a/tools/run_tests/performance/bq_upload_result.py
+++ b/tools/run_tests/performance/bq_upload_result.py
@@ -15,8 +15,6 @@
 
 # Uploads performance benchmark result file to bigquery.
 
-from __future__ import print_function
-
 import argparse
 import calendar
 import json
diff --git a/tools/run_tests/performance/patch_scenario_results_schema.py b/tools/run_tests/performance/patch_scenario_results_schema.py
index 44b23da6b4a1e0..5291d246e5d8ce 100755
--- a/tools/run_tests/performance/patch_scenario_results_schema.py
+++ b/tools/run_tests/performance/patch_scenario_results_schema.py
@@ -15,15 +15,10 @@
 
 # Use to patch schema of existing scenario results tables (after adding fields).
 
-from __future__ import print_function
-
 import argparse
-import calendar
 import json
 import os
 import sys
-import time
-import uuid
 
 gcp_utils_dir = os.path.abspath(
     os.path.join(os.path.dirname(__file__), "../../gcp/utils")
diff --git a/tools/run_tests/performance/prometheus.py b/tools/run_tests/performance/prometheus.py
old mode 100644
new mode 100755
index ced87fc47573e3..28bc808c06b6c1
--- a/tools/run_tests/performance/prometheus.py
+++ b/tools/run_tests/performance/prometheus.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-
 # Copyright 2022 The gRPC Authors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
old mode 100644
new mode 100755
index 395c8df25e072b..80c6d03cde2250
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Copyright 2016 gRPC authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");