diff --git a/.gitignore b/.gitignore
index b84f58d..8b2a7c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1 @@
-*.rpm
-results_mingw-dlfcn
-noarch
-
-dlfcn-win32-*
-dlfcn-win32-r11.tar.bz2
-/v1.1.1.tar.gz
-/v1.1.2.tar.gz
-/v1.2.0.tar.gz
+SOURCES/dlfcn-win32-1.4.1.tar.gz
diff --git a/.mingw-dlfcn.metadata b/.mingw-dlfcn.metadata
new file mode 100644
index 0000000..ce3ae32
--- /dev/null
+++ b/.mingw-dlfcn.metadata
@@ -0,0 +1 @@
+6215754b0725b327867b8e32b0e09789aca13907  SOURCES/dlfcn-win32-1.4.1.tar.gz
diff --git a/mingw-dlfcn.spec b/SPECS/mingw-dlfcn.spec
similarity index 80%
rename from mingw-dlfcn.spec
rename to SPECS/mingw-dlfcn.spec
index 30d7182..bcda14d 100644
--- a/mingw-dlfcn.spec
+++ b/SPECS/mingw-dlfcn.spec
@@ -1,10 +1,11 @@
+%global mingw_build_ucrt64 1
 %{?mingw_package_header}
 
 %global realname dlfcn-win32
 
 Name:          mingw-dlfcn
-Version:       1.3.1
-Release:       1%{?dist}
+Version:       1.4.1
+Release:       5%{?dist}
 Summary:       Implements a wrapper for dlfcn (dlopen dlclose dlsym dlerror)
 
 License:       LGPLv2+
@@ -24,6 +25,10 @@ BuildRequires: mingw64-filesystem >= 95
 BuildRequires: mingw64-gcc
 BuildRequires: mingw64-binutils
 
+BuildRequires: ucrt64-filesystem >= 95
+BuildRequires: ucrt64-gcc
+BuildRequires: ucrt64-binutils
+
 
 %description
 This library implements a wrapper for dlfcn, as specified in POSIX and SUS,
@@ -64,6 +69,23 @@ Requires:       mingw64-dlfcn = %{version}-%{release}
 Static version of the MinGW Windows dlfcn library.
 
 
+# UCRT64
+%package -n ucrt64-dlfcn
+Summary:        Implements a wrapper for dlfcn (dlopen dlclose dlsym dlerror)
+
+%description -n ucrt64-dlfcn
+This library implements a wrapper for dlfcn, as specified in POSIX and SUS,
+around the dynamic link library functions found in the Windows API.
+
+
+%package -n ucrt64-dlfcn-static
+Summary:        Static version of the MinGW Windows dlfcn library
+Requires:       ucrt64-dlfcn = %{version}-%{release}
+
+%description -n ucrt64-dlfcn-static
+Static version of the MinGW Windows dlfcn library.
+
+
 %{?mingw_debug_package}
 
 
@@ -121,8 +143,47 @@ export MINGW_BUILDDIR_SUFFIX=-static
 %files -n mingw64-dlfcn-static
 %{mingw64_libdir}/libdl.a
 
+# UCRT64
+%files -n ucrt64-dlfcn
+%doc README.md
+%license COPYING
+%{ucrt64_bindir}/libdl.dll
+%{ucrt64_libdir}/libdl.dll.a
+%{ucrt64_includedir}/dlfcn.h
+%{ucrt64_datadir}/%{realname}
+
+%files -n ucrt64-dlfcn-static
+%{ucrt64_libdir}/libdl.a
+
 
 %changelog
+* Wed Feb 05 2025 Eduard Basov <ebasov@msvsphere-os.ru> - 1.4.1-5
+- Rebuilt for MSVSphere 10
+
+* Thu Jul 18 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.4.1-5
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
+
+* Tue Apr 02 2024 Jonathan Schleifer <js@nil.im> - 1.4.1-4
+- Build UCRT64 package
+
+* Thu Jan 25 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.4.1-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
+
+* Sun Jan 21 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.4.1-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
+
+* Sun Jul 30 2023 Sandro Mani <manisandro@gmail.com> - 1.4.1-1
+- Update to 1.4.1
+
+* Thu Jul 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.4.0-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
+
+* Thu Jun 22 2023 Sandro Mani <manisandro@gmail.com> - 1.4.0-1
+- Update to 1.4.0
+
+* Thu Jan 19 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.1-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
+
 * Mon Nov 21 2022 Sandro Mani <manisandro@gmail.com> - 1.3.1-1
 - Update to 1.3.1
 
diff --git a/sources b/sources
deleted file mode 100644
index 773db24..0000000
--- a/sources
+++ /dev/null
@@ -1 +0,0 @@
-SHA512 (dlfcn-win32-1.3.1.tar.gz) = 0aa01c49ee8628c42cdc8b9782b4741a36502764d4442227ea4e9a8062356ff17e8eaa3cdd4113009ad7ad2044b6cfd24128319d71825e13062259dd1906e27e