diff --git a/arch/arm64/lib/memcmp.S b/arch/arm64/lib/memcmp.S
index 498f0d9941d9..7d956384222f 100644
--- a/arch/arm64/lib/memcmp.S
+++ b/arch/arm64/lib/memcmp.S
@@ -1,9 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2013-2020, Arm Limited.
+ * Copyright (c) 2013-2021, Arm Limited.
  *
  * Adapted from the original at:
- * https://github.com/ARM-software/optimized-routines/blob/master/string/aarch64/memcmp.S
+ * https://github.com/ARM-software/optimized-routines/blob/e823e3abf5f89ecb/string/aarch64/memcmp.S
  */
 
 #include <linux/linkage.h>
diff --git a/arch/arm64/lib/memcpy.S b/arch/arm64/lib/memcpy.S
index 31073a8304fb..b82fd64ee1e1 100644
--- a/arch/arm64/lib/memcpy.S
+++ b/arch/arm64/lib/memcpy.S
@@ -1,9 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2012-2020, Arm Limited.
+ * Copyright (c) 2012-2021, Arm Limited.
  *
  * Adapted from the original at:
- * https://github.com/ARM-software/optimized-routines/blob/master/string/aarch64/memcpy.S
+ * https://github.com/ARM-software/optimized-routines/blob/afd6244a1f8d9229/string/aarch64/memcpy.S
  */
 
 #include <linux/linkage.h>
@@ -249,4 +249,4 @@ EXPORT_SYMBOL(__memcpy)
 SYM_FUNC_END_ALIAS_PI(memmove)
 EXPORT_SYMBOL(memmove)
 SYM_FUNC_END_ALIAS(__memmove)
-EXPORT_SYMBOL(__memmove)
\ No newline at end of file
+EXPORT_SYMBOL(__memmove)
diff --git a/arch/arm64/lib/strcmp.S b/arch/arm64/lib/strcmp.S
index e82ccb6c2f93..d7bee210a798 100644
--- a/arch/arm64/lib/strcmp.S
+++ b/arch/arm64/lib/strcmp.S
@@ -1,9 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2012-2020, Arm Limited.
+ * Copyright (c) 2012-2021, Arm Limited.
  *
  * Adapted from the original at:
- * https://github.com/ARM-software/optimized-routines/blob/master/string/aarch64/strcmp.S
+ * https://github.com/ARM-software/optimized-routines/blob/afd6244a1f8d9229/string/aarch64/strcmp.S
  */
 
 #include <linux/linkage.h>
diff --git a/arch/arm64/lib/strlen.S b/arch/arm64/lib/strlen.S
index b557185b54a5..35fbdb7d6e1a 100644
--- a/arch/arm64/lib/strlen.S
+++ b/arch/arm64/lib/strlen.S
@@ -1,9 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2013, Arm Limited.
+ * Copyright (c) 2013-2021, Arm Limited.
  *
  * Adapted from the original at:
- * https://github.com/ARM-software/optimized-routines/blob/master/string/aarch64/strlen.S
+ * https://github.com/ARM-software/optimized-routines/blob/98e4d6a5c13c8e54/string/aarch64/strlen.S
  */
 
 #include <linux/linkage.h>
diff --git a/arch/arm64/lib/strncmp.S b/arch/arm64/lib/strncmp.S
index 0c0bf5462de0..48d44f7fddb1 100644
--- a/arch/arm64/lib/strncmp.S
+++ b/arch/arm64/lib/strncmp.S
@@ -1,9 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2013, Arm Limited.
+ * Copyright (c) 2013-2021, Arm Limited.
  *
  * Adapted from the original at:
- * https://github.com/ARM-software/optimized-routines/blob/master/string/aarch64/strncmp.S
+ * https://github.com/ARM-software/optimized-routines/blob/e823e3abf5f89ecb/string/aarch64/strncmp.S
  */
 
 #include <linux/linkage.h>