--- virtualenv-20.39.0/tests/unit/discovery/py_info/test_py_info.py.orig
+++ virtualenv-20.39.0/tests/unit/discovery/py_info/test_py_info.py
@@ -549,7 +549,7 @@
     assert isinstance(machine, str)
     assert len(machine) > 0
     # Should be a recognized ISA value
-    known_isas = {"arm64", "x86_64", "x86", "ppc64le", "ppc64", "s390x", "riscv64"}
+    known_isas = {"arm64", "x86_64", "x86", "ppc64le", "ppc64", "s390x", "riscv64", "i86pc.64bit"}
     assert machine in known_isas, f"unexpected machine value: {machine}"
 
 
--- virtualenv-20.39.0/src/virtualenv/discovery/py_spec.py.orig
+++ virtualenv-20.39.0/src/virtualenv/discovery/py_spec.py
@@ -16,7 +16,7 @@
     (?P<version>[0-9.]+)?           # version (e.g. 3.12, 3.12.1)
     (?P<threaded>t)?                # free-threaded flag
     (?:-(?P<arch>32|64))?           # architecture bitness
-    (?:-(?P<machine>[a-zA-Z0-9_]+))?  # ISA (e.g. arm64, x86_64)
+    (?:-(?P<machine>[a-zA-Z0-9_.]+))?  # ISA (e.g. arm64, x86_64)
     $
     """,
     re.VERBOSE,