diff --git a/Doc/library/sysconfig.rst b/Doc/library/sysconfig.rst
index 3921908b7c7bfc..9f018f9c8f0e50 100644
--- a/Doc/library/sysconfig.rst
+++ b/Doc/library/sysconfig.rst
@@ -388,7 +388,8 @@ Other functions
 
    Windows will return one of:
 
-   - win-amd64 (64bit Windows on AMD64, aka x86_64, Intel64, and EM64T)
+   - win-amd64 (64-bit Windows on AMD64, aka x86_64, Intel64, and EM64T)
+   - win-arm64 (64-bit Windows on ARM64, aka AArch64)
    - win32 (all others - specifically, sys.platform is returned)
 
    macOS can return:
diff --git a/Lib/sysconfig/__init__.py b/Lib/sysconfig/__init__.py
index 20d506bcd45abc..7a4a8f65a5eb3e 100644
--- a/Lib/sysconfig/__init__.py
+++ b/Lib/sysconfig/__init__.py
@@ -616,7 +616,8 @@ def get_platform():
        solaris-2.6-sun4u
 
     Windows will return one of:
-       win-amd64 (64bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)
+       win-amd64 (64-bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)
+       win-arm64 (64-bit Windows on ARM64 (aka AArch64)
        win32 (all others - specifically, sys.platform is returned)
 
     For other non-POSIX platforms, currently just returns 'sys.platform'.