diff --git a/Lib/test/test_embed.py b/Lib/test/test_embed.py
index 169ae5cb0a06eb..f93301da88863c 100644
--- a/Lib/test/test_embed.py
+++ b/Lib/test/test_embed.py
@@ -1264,6 +1264,17 @@ def test_init_setpythonhome(self):
             # Because we are specifying 'home', module search paths
             # are fairly static
             expected_paths = [paths[0], stdlib, os.path.join(home, 'DLLs')]
+            try:
+                # gh-91985 insert a dll build path
+                p = os.path.dirname(self.test_exe)
+                with open(os.path.join(p, 'pybuilddir.txt'), encoding='utf8') as f:
+                    p = os.path.normpath(
+                        os.path.join(p, f'{f.read()}\n$'.splitlines()[0]))
+                if p != expected_paths[-1]:
+                    expected_paths.insert(-1, p)
+                del p
+            except FileNotFoundError:
+                del p
         else:
             version = f'{sys.version_info.major}.{sys.version_info.minor}'
             stdlib = os.path.join(home, sys.platlibdir, f'python{version}')
diff --git a/Modules/getpath.py b/Modules/getpath.py
index 9aff19c0af7edd..7b0a35dcbbb580 100644
--- a/Modules/getpath.py
+++ b/Modules/getpath.py
@@ -692,6 +692,17 @@ def search_up(prefix, *landmarks, test=isfile):
         if stdlib_dir:
             pythonpath.append(stdlib_dir)
         if platstdlib_dir:
+            if os_name == 'nt' and real_executable_dir and \
+                    isfile(joinpath(real_executable_dir, BUILDDIR_TXT)):
+                try:
+                    p = joinpath(
+                        real_executable_dir,
+                        readlines(joinpath(real_executable_dir, BUILDDIR_TXT))[0],
+                    )
+                except IndexError:
+                    p = real_executable_dir
+                if p != platstdlib_dir:
+                    pythonpath.append(p)  # prior to platstdlib_dir
             pythonpath.append(platstdlib_dir)
 
     config['module_search_paths'] = pythonpath