diff --git a/bdsf/multi_proc.py b/bdsf/multi_proc.py
index 049b447..9d3c010 100644
--- a/bdsf/multi_proc.py
+++ b/bdsf/multi_proc.py
@@ -8,31 +8,24 @@
 (http://www.astropython.org/snippet/2010/3/Parallel-map-using-multiprocessing).
 
 """
-from __future__ import print_function
-import traceback
-import sys
+
+import multiprocessing
 import os
+import sys
+import traceback
+
 import numpy
-import multiprocessing
-_ncpus = 1
-
-# Get the number of available cores. We use os.sched_getaffinity() for this if
-# possible, as the number of available cores may be less than the total number
-# of CPU cores in the machine, which is returned by, e.g.,
-# multiprocessing.cpu_count()
-#
-# Note: since macOS (Darwin) does not support os.sched_getaffinity(), we use
-# multiprocessing.cpu_count() instead
-if sys.platform == 'darwin':
-    if sys.version_info[0] == 3 and sys.version_info[1] >= 8:
-        # We need to set spawn method to "fork" for macOS on Python 3.8+ where
-        # the default has been changed to "spawn", causing problems (see the
-        # discussion at https://github.com/ipython/ipython/issues/12396)
-        multiprocessing.set_start_method('fork')
-    _ncpus = multiprocessing.cpu_count()
-else:
+
+# Try to determine the number of CPU cores _available_ to the current process,
+# similar to what the Linux `nproc` command does. If that fails, return the
+# total number of CPU cores in the machine.
+try:
     _ncpus = len(os.sched_getaffinity(0))
+except AttributeError:
+    _ncpus = multiprocessing.cpu_count()
 
+# Set the start method to "fork". Other methods don't work with our codebase.
+multiprocessing.set_start_method('fork')
 
 __all__ = ('parallel_map',)
 
diff --git a/pyproject.toml b/pyproject.toml
index 9760c32..2bed944 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Topic :: Scientific/Engineering :: Astronomy",
 ]
 dependencies = [
@@ -75,7 +76,7 @@ Documentation = "https://pybdsf.readthedocs.io"
 [tool.cibuildwheel]
 before-all = "cibuildwheel/before_all.sh"
 before-build = "cibuildwheel/before_build.sh"
-build = "cp3{9,10,11,12,13}-*"
+build = "cp3{9,10,11,12,13,14}-*"
 build-verbosity = 1
 environment = """ \
     BOOST_VERSION="1.87.0" \