diff --git a/tools/batools/build.py b/tools/batools/build.py
index ad241f49..20aa4338 100644
--- a/tools/batools/build.py
+++ b/tools/batools/build.py
@@ -485,9 +485,10 @@ def get_current_prefab_platform(wsl_gives_windows: bool = True) -> str:
                     f'make_prefab: unsupported win machine type:'
                     f' {machine}.')
 
-        # TODO: add support for arm linux.
         if machine == 'x86_64':
             return 'linux_x86_64'
+        if machine == 'arm64':
+            return 'linux_arm64'
         raise RuntimeError(f'make_prefab: unsupported linux machine type:'
                            f' {machine}.')
     raise RuntimeError(f'make_prefab: unrecognized platform:'