diff --git a/backends/arm/arm_vela.py b/backends/arm/arm_vela.py
index 5e2af9c5f39..1ecaca3c454 100644
--- a/backends/arm/arm_vela.py
+++ b/backends/arm/arm_vela.py
@@ -3,7 +3,6 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-# pyre-unsafe
 
 import os
 import struct
diff --git a/backends/arm/process_node.py b/backends/arm/process_node.py
index 7dd8f9a7d38..54797b825b7 100644
--- a/backends/arm/process_node.py
+++ b/backends/arm/process_node.py
@@ -4,7 +4,6 @@
 # LICENSE file in the root directory of this source tree.
 #
 
-# pyre-unsafe
 from typing import Any, cast, Dict
 
 import numpy as np
diff --git a/backends/arm/quantizer/arm_quantizer.py b/backends/arm/quantizer/arm_quantizer.py
index e6b1358e7e0..cad714607e2 100644
--- a/backends/arm/quantizer/arm_quantizer.py
+++ b/backends/arm/quantizer/arm_quantizer.py
@@ -5,7 +5,6 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-# pyre-unsafe
 
 #
 # Quantizer for Arm backend
diff --git a/backends/arm/quantizer/arm_quantizer_utils.py b/backends/arm/quantizer/arm_quantizer_utils.py
index 90876386aa6..c1137ea4149 100644
--- a/backends/arm/quantizer/arm_quantizer_utils.py
+++ b/backends/arm/quantizer/arm_quantizer_utils.py
@@ -5,7 +5,6 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-# pyre-unsafe
 """Provide utilities for quantization annotations.
 
 Use these helpers to check and mark annotation state when working with
diff --git a/backends/arm/quantizer/quantization_config.py b/backends/arm/quantizer/quantization_config.py
index 7495ff22ac6..bb1c8ec51cd 100644
--- a/backends/arm/quantizer/quantization_config.py
+++ b/backends/arm/quantizer/quantization_config.py
@@ -11,7 +11,6 @@
 
 """
 
-# pyre-unsafe
 
 from dataclasses import dataclass