diff --git a/infra/bots/recipe_modules/upload_nano_results/api.py b/infra/bots/recipe_modules/upload_nano_results/api.py
index e215273da3..bfec2fd810 100644
--- a/infra/bots/recipe_modules/upload_nano_results/api.py
+++ b/infra/bots/recipe_modules/upload_nano_results/api.py
@@ -46,5 +46,5 @@ class UploadNanoResultsApi(recipe_api.RecipeApi):
 
     self.m.step(
         'upload',
-        cmd=['gsutil', 'cp', '-a', 'public-read', '-z', 'json', src, dst],
+        cmd=['gsutil', 'cp', '-z', 'json', src, dst],
         infra_step=True)
diff --git a/infra/bots/recipe_modules/upload_nano_results/example.expected/normal_bot.json b/infra/bots/recipe_modules/upload_nano_results/example.expected/normal_bot.json
index e004853974..2a5d199ab2 100644
--- a/infra/bots/recipe_modules/upload_nano_results/example.expected/normal_bot.json
+++ b/infra/bots/recipe_modules/upload_nano_results/example.expected/normal_bot.json
@@ -14,8 +14,6 @@
     "cmd": [
       "gsutil",
       "cp",
-      "-a",
-      "public-read",
       "-z",
       "json",
       "[START_DIR]/perfdata/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug/data/nanobench_abc123.json",
diff --git a/infra/bots/recipe_modules/upload_nano_results/example.expected/recipe_with_gerrit_patch.json b/infra/bots/recipe_modules/upload_nano_results/example.expected/recipe_with_gerrit_patch.json
index f55491cf7a..9eeab965b4 100644
--- a/infra/bots/recipe_modules/upload_nano_results/example.expected/recipe_with_gerrit_patch.json
+++ b/infra/bots/recipe_modules/upload_nano_results/example.expected/recipe_with_gerrit_patch.json
@@ -14,8 +14,6 @@
     "cmd": [
       "gsutil",
       "cp",
-      "-a",
-      "public-read",
       "-z",
       "json",
       "[START_DIR]/perfdata/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-Trybot/data/nanobench_abc123.json",
diff --git a/infra/bots/recipe_modules/upload_nano_results/example.expected/trybot.json b/infra/bots/recipe_modules/upload_nano_results/example.expected/trybot.json
index dd71c716cb..2b16c92b71 100644
--- a/infra/bots/recipe_modules/upload_nano_results/example.expected/trybot.json
+++ b/infra/bots/recipe_modules/upload_nano_results/example.expected/trybot.json
@@ -14,8 +14,6 @@
     "cmd": [
       "gsutil",
       "cp",
-      "-a",
-      "public-read",
       "-z",
       "json",
       "[START_DIR]/perfdata/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-Trybot/data/nanobench_abc123.json",
diff --git a/infra/bots/recipes/upload_nano_results.expected/upload.json b/infra/bots/recipes/upload_nano_results.expected/upload.json
index e004853974..2a5d199ab2 100644
--- a/infra/bots/recipes/upload_nano_results.expected/upload.json
+++ b/infra/bots/recipes/upload_nano_results.expected/upload.json
@@ -14,8 +14,6 @@
     "cmd": [
       "gsutil",
       "cp",
-      "-a",
-      "public-read",
       "-z",
       "json",
       "[START_DIR]/perfdata/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug/data/nanobench_abc123.json",