diff --git a/gyp/CHANGELOG.md b/gyp/CHANGELOG.md
index 6d66b3acd2..f17c8fcbef 100644
--- a/gyp/CHANGELOG.md
+++ b/gyp/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+### [0.9.4](https://www.github.com/nodejs/gyp-next/compare/v0.9.3...v0.9.4) (2021-08-09)
+
+
+### Bug Fixes
+
+* .S is an extension for asm file on Windows ([#115](https://www.github.com/nodejs/gyp-next/issues/115)) ([d2fad44](https://www.github.com/nodejs/gyp-next/commit/d2fad44ef3a79ca8900f1307060153ded57053fc))
+
+### [0.9.3](https://www.github.com/nodejs/gyp-next/compare/v0.9.2...v0.9.3) (2021-07-07)
+
+
+### Bug Fixes
+
+* build failure with ninja and Python 3 on Windows ([#113](https://www.github.com/nodejs/gyp-next/issues/113)) ([c172d10](https://www.github.com/nodejs/gyp-next/commit/c172d105deff5db4244e583942215918fa80dd3c))
+
+### [0.9.2](https://www.github.com/nodejs/gyp-next/compare/v0.9.1...v0.9.2) (2021-05-21)
+
+
+### Bug Fixes
+
+* add support of utf8 encoding ([#105](https://www.github.com/nodejs/gyp-next/issues/105)) ([4d0f93c](https://www.github.com/nodejs/gyp-next/commit/4d0f93c249286d1f0c0f665f5fe7346119f98cf1))
+
 ### [0.9.1](https://www.github.com/nodejs/gyp-next/compare/v0.9.0...v0.9.1) (2021-05-14)
 
 
diff --git a/gyp/pylib/gyp/MSVSUtil.py b/gyp/pylib/gyp/MSVSUtil.py
index cb55305eae..36bb782bd3 100644
--- a/gyp/pylib/gyp/MSVSUtil.py
+++ b/gyp/pylib/gyp/MSVSUtil.py
@@ -55,7 +55,7 @@ def _SuffixName(name, suffix):
     Target name with suffix added (foo_suffix#target)
   """
     parts = name.rsplit("#", 1)
-    parts[0] = "{}_{}".format(parts[0], suffix)
+    parts[0] = f"{parts[0]}_{suffix}"
     return "#".join(parts)
 
 
diff --git a/gyp/pylib/gyp/common.py b/gyp/pylib/gyp/common.py
index ba310ce247..9213fcc5e8 100644
--- a/gyp/pylib/gyp/common.py
+++ b/gyp/pylib/gyp/common.py
@@ -562,7 +562,7 @@ def pop(self, last=True):  # pylint: disable=W0221
     def __repr__(self):
         if not self:
             return f"{self.__class__.__name__}()"
-        return "{}({!r})".format(self.__class__.__name__, list(self))
+        return f"{self.__class__.__name__}({list(self)!r})"
 
     def __eq__(self, other):
         if isinstance(other, OrderedSet):
diff --git a/gyp/pylib/gyp/easy_xml.py b/gyp/pylib/gyp/easy_xml.py
index e475b5530c..0c99e29ecf 100644
--- a/gyp/pylib/gyp/easy_xml.py
+++ b/gyp/pylib/gyp/easy_xml.py
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import sys
 import re
 import os
 import locale
@@ -84,7 +85,7 @@ def _ConstructContentList(xml_parts, specification, pretty, level=0):
     rest = specification[1:]
     if rest and isinstance(rest[0], dict):
         for at, val in sorted(rest[0].items()):
-            xml_parts.append(' {}="{}"'.format(at, _XmlEscape(val, attr=True)))
+            xml_parts.append(f' {at}="{_XmlEscape(val, attr=True)}"')
         rest = rest[1:]
     if rest:
         xml_parts.append(">")
@@ -106,7 +107,8 @@ def _ConstructContentList(xml_parts, specification, pretty, level=0):
         xml_parts.append("/>%s" % new_line)
 
 
-def WriteXmlIfChanged(content, path, encoding="utf-8", pretty=False, win32=False):
+def WriteXmlIfChanged(content, path, encoding="utf-8", pretty=False,
+                      win32=(sys.platform == "win32")):
     """ Writes the XML content to disk, touching the file only if it has changed.
 
   Args:
@@ -121,7 +123,10 @@ def WriteXmlIfChanged(content, path, encoding="utf-8", pretty=False, win32=False
 
     default_encoding = locale.getdefaultlocale()[1]
     if default_encoding and default_encoding.upper() != encoding.upper():
-        xml_string = xml_string.encode(encoding)
+        if win32 and sys.version_info < (3, 7):
+            xml_string = xml_string.decode("cp1251").encode(encoding)
+        else:
+            xml_string = xml_string.encode(encoding)
 
     # Get the old content
     try:
diff --git a/gyp/pylib/gyp/generator/android.py b/gyp/pylib/gyp/generator/android.py
index 040d8088a2..cdf1a4832c 100644
--- a/gyp/pylib/gyp/generator/android.py
+++ b/gyp/pylib/gyp/generator/android.py
@@ -349,7 +349,7 @@ def WriteActions(self, actions, extra_sources, extra_outputs):
             for output in outputs[1:]:
                 # Make each output depend on the main output, with an empty command
                 # to force make to notice that the mtime has changed.
-                self.WriteLn("{}: {} ;".format(self.LocalPathify(output), main_output))
+                self.WriteLn(f"{self.LocalPathify(output)}: {main_output} ;")
 
             extra_outputs += outputs
             self.WriteLn()
@@ -616,7 +616,7 @@ def WriteSources(self, spec, configs, extra_sources):
             if IsCPPExtension(ext) and ext != local_cpp_extension:
                 local_file = root + local_cpp_extension
             if local_file != source:
-                self.WriteLn("{}: {}".format(local_file, self.LocalPathify(source)))
+                self.WriteLn(f"{local_file}: {self.LocalPathify(source)}")
                 self.WriteLn("\tmkdir -p $(@D); cp $< $@")
                 origin_src_dirs.append(os.path.dirname(source))
             final_generated_sources.append(local_file)
@@ -908,7 +908,7 @@ def WriteTarget(
                 if isinstance(v, list):
                     self.WriteList(v, k)
                 else:
-                    self.WriteLn("{} := {}".format(k, make.QuoteIfNecessary(v)))
+                    self.WriteLn(f"{k} := {make.QuoteIfNecessary(v)}")
             self.WriteLn("")
 
         # Add to the set of targets which represent the gyp 'all' target. We use the
diff --git a/gyp/pylib/gyp/generator/make.py b/gyp/pylib/gyp/generator/make.py
index eb9102dd15..c595f20fe2 100644
--- a/gyp/pylib/gyp/generator/make.py
+++ b/gyp/pylib/gyp/generator/make.py
@@ -2133,7 +2133,7 @@ def WriteSortedXcodeEnv(self, target, env):
             #  export foo := a\ b
             # it does not -- the backslash is written to the env as literal character.
             # So don't escape spaces in |env[k]|.
-            self.WriteLn("{}: export {} := {}".format(QuoteSpaces(target), k, v))
+            self.WriteLn(f"{QuoteSpaces(target)}: export {k} := {v}")
 
     def Objectify(self, path):
         """Convert a path to its output directory form."""
diff --git a/gyp/pylib/gyp/generator/msvs.py b/gyp/pylib/gyp/generator/msvs.py
index 5435eb1e1f..31d5396fe5 100644
--- a/gyp/pylib/gyp/generator/msvs.py
+++ b/gyp/pylib/gyp/generator/msvs.py
@@ -314,7 +314,7 @@ def _ConfigBaseName(config_name, platform_name):
 
 def _ConfigFullName(config_name, config_data):
     platform_name = _ConfigPlatform(config_data)
-    return "{}|{}".format(_ConfigBaseName(config_name, platform_name), platform_name)
+    return f"{_ConfigBaseName(config_name, platform_name)}|{platform_name}"
 
 
 def _ConfigWindowsTargetPlatformVersion(config_data, version):
@@ -335,7 +335,7 @@ def _ConfigWindowsTargetPlatformVersion(config_data, version):
             # Find a matching entry in sdk_dir\include.
             expected_sdk_dir = r"%s\include" % sdk_dir
             names = sorted(
-                [
+                (
                     x
                     for x in (
                         os.listdir(expected_sdk_dir)
@@ -343,7 +343,7 @@ def _ConfigWindowsTargetPlatformVersion(config_data, version):
                         else []
                     )
                     if x.startswith(version)
-                ],
+                ),
                 reverse=True,
             )
             if names:
diff --git a/gyp/pylib/gyp/generator/ninja.py b/gyp/pylib/gyp/generator/ninja.py
index ca032aef20..cfe3c49aaf 100644
--- a/gyp/pylib/gyp/generator/ninja.py
+++ b/gyp/pylib/gyp/generator/ninja.py
@@ -638,7 +638,7 @@ def GenerateDescription(self, verb, message, fallback):
         if self.toolset != "target":
             verb += "(%s)" % self.toolset
         if message:
-            return "{} {}".format(verb, self.ExpandSpecial(message))
+            return f"{verb} {self.ExpandSpecial(message)}"
         else:
             return f"{verb} {self.name}: {fallback}"
 
@@ -1221,7 +1221,7 @@ def WriteSourcesForArch(
                 command = "cc_s"
             elif (
                 self.flavor == "win"
-                and ext == "asm"
+                and ext in ("asm", "S")
                 and not self.msvs_settings.HasExplicitAsmRules(spec)
             ):
                 command = "asm"
@@ -2389,7 +2389,6 @@ def GenerateOutputForConfig(target_list, target_dicts, data, params, config_name
         )
         if flavor == "win":
             master_ninja.variable("ld_host", ld_host)
-            master_ninja.variable("ldxx_host", ldxx_host)
         else:
             master_ninja.variable(
                 "ld_host", CommandWithWrapper("LINK", wrappers, ld_host)
diff --git a/gyp/pylib/gyp/input.py b/gyp/pylib/gyp/input.py
index ca7ce44eab..354958bfb2 100644
--- a/gyp/pylib/gyp/input.py
+++ b/gyp/pylib/gyp/input.py
@@ -225,7 +225,7 @@ def LoadOneBuildFile(build_file_path, data, aux_data, includes, is_target, check
         return data[build_file_path]
 
     if os.path.exists(build_file_path):
-        build_file_contents = open(build_file_path).read()
+        build_file_contents = open(build_file_path, encoding='utf-8').read()
     else:
         raise GypError(f"{build_file_path} not found (cwd: {os.getcwd()})")
 
diff --git a/gyp/pylib/gyp/msvs_emulation.py b/gyp/pylib/gyp/msvs_emulation.py
index f744e38df1..6fcabd049d 100644
--- a/gyp/pylib/gyp/msvs_emulation.py
+++ b/gyp/pylib/gyp/msvs_emulation.py
@@ -333,7 +333,7 @@ def _TargetConfig(self, config):
         # first level is globally for the configuration (this is what we consider
         # "the" config at the gyp level, which will be something like 'Debug' or
         # 'Release'), VS2015 and later only use this level
-        if self.vs_version.short_name >= 2015:
+        if int(self.vs_version.short_name) >= 2015:
             return config
         # and a second target-specific configuration, which is an
         # override for the global one. |config| is remapped here to take into
@@ -537,7 +537,7 @@ def GetCflags(self, config):
                 )
             ]
         )
-        if self.vs_version.project_version >= 12.0:
+        if float(self.vs_version.project_version) >= 12.0:
             # New flag introduced in VS2013 (project version 12.0) Forces writes to
             # the program database (PDB) to be serialized through MSPDBSRV.EXE.
             # https://msdn.microsoft.com/en-us/library/dn502518.aspx
diff --git a/gyp/pylib/gyp/win_tool.py b/gyp/pylib/gyp/win_tool.py
index 4dbcda50a4..638eee4002 100755
--- a/gyp/pylib/gyp/win_tool.py
+++ b/gyp/pylib/gyp/win_tool.py
@@ -221,8 +221,9 @@ def ExecLinkWithManifests(
             # and sometimes doesn't unfortunately.
             with open(our_manifest) as our_f:
                 with open(assert_manifest) as assert_f:
-                    our_data = our_f.read().translate(None, string.whitespace)
-                    assert_data = assert_f.read().translate(None, string.whitespace)
+                    translator = str.maketrans('', '', string.whitespace)
+                    our_data = our_f.read().translate(translator)
+                    assert_data = assert_f.read().translate(translator)
             if our_data != assert_data:
                 os.unlink(out)
 
diff --git a/gyp/pylib/gyp/xcodeproj_file.py b/gyp/pylib/gyp/xcodeproj_file.py
index 5863ef45df..076eea3721 100644
--- a/gyp/pylib/gyp/xcodeproj_file.py
+++ b/gyp/pylib/gyp/xcodeproj_file.py
@@ -299,8 +299,8 @@ def __repr__(self):
         try:
             name = self.Name()
         except NotImplementedError:
-            return "<{} at 0x{:x}>".format(self.__class__.__name__, id(self))
-        return "<{} {!r} at 0x{:x}>".format(self.__class__.__name__, name, id(self))
+            return f"<{self.__class__.__name__} at 0x{id(self):x}>"
+        return f"<{self.__class__.__name__} {name!r} at 0x{id(self):x}>"
 
     def Copy(self):
         """Make a copy of this object.
@@ -2251,7 +2251,7 @@ class PBXContainerItemProxy(XCObject):
     def __repr__(self):
         props = self._properties
         name = "{}.gyp:{}".format(props["containerPortal"].Name(), props["remoteInfo"])
-        return "<{} {!r} at 0x{:x}>".format(self.__class__.__name__, name, id(self))
+        return f"<{self.__class__.__name__} {name!r} at 0x{id(self):x}>"
 
     def Name(self):
         # Admittedly not the best name, but it's what Xcode uses.
@@ -2288,7 +2288,7 @@ class PBXTargetDependency(XCObject):
 
     def __repr__(self):
         name = self._properties.get("name") or self._properties["target"].Name()
-        return "<{} {!r} at 0x{:x}>".format(self.__class__.__name__, name, id(self))
+        return f"<{self.__class__.__name__} {name!r} at 0x{id(self):x}>"
 
     def Name(self):
         # Admittedly not the best name, but it's what Xcode uses.
diff --git a/gyp/setup.py b/gyp/setup.py
index f4a9481937..4546f0cd22 100644
--- a/gyp/setup.py
+++ b/gyp/setup.py
@@ -15,7 +15,7 @@
 
 setup(
     name="gyp-next",
-    version="0.9.1",
+    version="0.9.4",
     description="A fork of the GYP build system for use in the Node.js projects",
     long_description=long_description,
     long_description_content_type="text/markdown",
diff --git a/gyp/test_gyp.py b/gyp/test_gyp.py
index 757d2fc0b0..9ba264170f 100755
--- a/gyp/test_gyp.py
+++ b/gyp/test_gyp.py
@@ -140,10 +140,7 @@ def main(argv=None):
     if not args.quiet:
         runner.print_results()
 
-    if runner.failures:
-        return 1
-    else:
-        return 0
+    return 1 if runner.failures else 0
 
 
 def print_configuration_info():
@@ -152,8 +149,8 @@ def print_configuration_info():
         sys.path.append(os.path.abspath("test/lib"))
         import TestMac
 
-        print("  Mac {} {}".format(platform.mac_ver()[0], platform.mac_ver()[2]))
-        print("  Xcode %s" % TestMac.Xcode.Version())
+        print(f"  Mac {platform.mac_ver()[0]} {platform.mac_ver()[2]}")
+        print(f"  Xcode {TestMac.Xcode.Version()}")
     elif sys.platform == "win32":
         sys.path.append(os.path.abspath("pylib"))
         import gyp.MSVSVersion
@@ -162,8 +159,8 @@ def print_configuration_info():
         print("  MSVS %s" % gyp.MSVSVersion.SelectVisualStudioVersion().Description())
     elif sys.platform in ("linux", "linux2"):
         print("  Linux %s" % " ".join(platform.linux_distribution()))
-    print("  Python %s" % platform.python_version())
-    print("  PYTHONPATH=%s" % os.environ["PYTHONPATH"])
+    print(f"  Python {platform.python_version()}")
+    print(f"  PYTHONPATH={os.environ['PYTHONPATH']}")
     print()
 
 
@@ -222,13 +219,9 @@ def run_test(self, test, fmt, i):
         res_msg = f" {res} {took:.3f}s"
         self.print_(res_msg)
 
-        if (
-            stdout
-            and not stdout.endswith("PASSED\n")
-            and not (stdout.endswith("NO RESULT\n"))
-        ):
+        if stdout and not stdout.endswith(("PASSED\n", "NO RESULT\n")):
             print()
-            print("\n".join("    %s" % line for line in stdout.splitlines()))
+            print("\n".join(f"    {line}" for line in stdout.splitlines()))
         elif not self.isatty:
             print()