diff -up thunderbird-115.0.1/mach.python312 thunderbird-115.0.1/mach
--- thunderbird-115.0.1/mach.python312	2023-07-26 14:30:25.336532252 +0200
+++ thunderbird-115.0.1/mach	2023-07-26 14:31:19.056512905 +0200
@@ -67,7 +67,7 @@ def try_alternate_python3_executables(ar
 def main(args):
     # Ensure we are running Python 3.7+. We run this check as soon as
     # possible to avoid a cryptic import/usage error.
-    if sys.version_info < MIN_PYTHON_VERSION:
+    if sys.version_info < MIN_PYTHON_VERSION or sys.version_info > MAX_PYTHON_VERSION_TO_CONSIDER:
         print(f"Python {MIN_PYTHON_VERSION[0]}.{MIN_PYTHON_VERSION[1]}+ is required to run mach.")
         print("You are running Mach with Python {0}".format(platform.python_version()))
         try_alternate_python3_executables(args)