diff --git a/docs/integration_guide/spm_backends.rst b/docs/integration_guide/spm_backends.rst
index e690b36..8922705 100644
--- a/docs/integration_guide/spm_backends.rst
+++ b/docs/integration_guide/spm_backends.rst
@@ -89,8 +89,8 @@
 
 .. [1] `FF-M v1.0 Specification <https://developer.arm.com/documentation/den0063/latest/>`__
 
-.. [2] `FF-M v1.1 Extention <https://documentation-service.arm.com/static/600067c09b9c2d1bb22cd1c5?token=>`__
+.. [2] `FF-M v1.1 Extension <https://developer.arm.com/documentation/aes0039/latest/>`__
 
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-*Copyright (c) 2022, Arm Limited. All rights reserved.*
+*Copyright (c) 2022-2023, Arm Limited. All rights reserved.*