diff --git a/mesonpy/__init__.py b/mesonpy/__init__.py
index 169694d70..fe417b378 100644
--- a/mesonpy/__init__.py
+++ b/mesonpy/__init__.py
@@ -275,6 +275,9 @@ def platform_tag(self) -> str:
                 # latter specifies the target macOS version Python was built
                 # against.
                 parts[1] = platform.mac_ver()[0]
+                # Only pick up the major version
+                # https://github.com/FFY00/meson-python/issues/160
+                parts[1] = parts[1].split('.')[0]
 
             if parts[1] in ('11', '12'):
                 # Workaround for bug where pypa/packaging does not consider macOS
diff --git a/tests/test_wheel.py b/tests/test_wheel.py
index 894194bc2..c2700e286 100644
--- a/tests/test_wheel.py
+++ b/tests/test_wheel.py
@@ -51,7 +51,9 @@
 platform_ = sysconfig.get_platform()
 if platform.system() == 'Darwin':
     parts = platform_.split('-')
-    parts[1] = platform.mac_ver()[0]
+    parts[1] = platform.mac_ver()[0].split('.')[0]
+    if parts[1] in ('11', '12'):
+        parts[1] += '.0'
     platform_ = '-'.join(parts)
 PLATFORM_TAG = platform_.replace('-', '_').replace('.', '_')