diff --git a/.gitignore b/.gitignore
index a406b34..d6f9125 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
-udns-*.tar.gz
+udns_0.0.9.tar.gz
+/udns-0.2.tar.gz
+/udns-0.4.tar.gz
diff --git a/sources b/sources
index 7c64a46..7111cba 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (udns-0.6.tar.gz) = 9846c476e23f148565d2ea986352c34a364ec5b949db3821a8ed6bdf5d33b830f0afbbcf4d441420a36c57620236a01ef04f6f8b2619f6ec64595bab5524afe1
+51e141b044b078d71ebb71f823959c1b  udns-0.4.tar.gz
diff --git a/udns-configure-c99.patch b/udns-configure-c99.patch
deleted file mode 100644
index e1e5049..0000000
--- a/udns-configure-c99.patch
+++ /dev/null
@@ -1,15 +0,0 @@
-Avoid incorrect pointer types and a pointer-to-int conversion with inet_pton and inet_ntop.
-diff -ru udns-0.6.orig/configure udns-0.6.new/configure
---- udns-0.6.orig/configure	2024-07-26 06:54:06.000000000 +0200
-+++ udns-0.6.new/configure	2024-07-30 15:14:16.142462741 +0200
-@@ -94,8 +94,8 @@
- int main() {
-   char buf[64];
-   long x = 0;
--  inet_ntop(AF_INET, &x, buf, sizeof(buf));
--  inet_pton(AF_INET, buf, &x);
-+  inet_ntop(AF_INET, (void *) &x, buf, sizeof(buf));
-+  inet_pton(AF_INET, buf, (void *) &x);
-   return x;
- } 
- EOF
diff --git a/udns.spec b/udns.spec
index ef473a7..bf6976c 100644
--- a/udns.spec
+++ b/udns.spec
@@ -1,14 +1,10 @@
-Name:           udns
-Version:        0.6
-Release:        5%{?dist}
-Summary:        DNS resolver library for both synchronous and asynchronous DNS queries
-License:        LGPL-2.1-or-later
-URL:            http://www.corpit.ru/mjt/udns.html
-Source:         http://www.corpit.ru/mjt/udns/udns-%{version}.tar.gz
-
-# Provide autoconf-style fake prototype for socket to avoid implicit function declarations.
-Patch0: udns-configure-c99.patch
-
+Summary: DNS resolver library for both synchronous and asynchronous DNS queries
+Name: udns
+Version: 0.4
+Release: 16%{?dist}
+License: LGPLv2+
+URL: http://www.corpit.ru/mjt/udns.html
+Source: http://www.corpit.ru/mjt/udns/udns-%{version}.tar.gz
 BuildRequires: make
 BuildRequires: gcc
 
@@ -26,7 +22,7 @@ documentation for %{name}. If you like to develop programs using %{name},
 you will need to install %{name}-devel.
 
 %prep
-%autosetup -p1
+%setup -q
 
 %build
 CFLAGS="%{optflags}" ./configure --enable-ipv6
@@ -53,51 +49,6 @@ CFLAGS="%{optflags}" ./configure --enable-ipv6
 %{_libdir}/libudns.so
 
 %changelog
-* Fri Jul 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 0.6-5
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild
-
-* Sat Jan 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 0.6-4
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild
-
-* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 0.6-3
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
-
-* Sun Jan 19 2025 Fedora Release Engineering <releng@fedoraproject.org> - 0.6-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
-
-* Tue Jul 30 2024 Michal Ambroz <rebus _AT seznam.cz> - 0.6-1
-- bump to 0.6
-
-* Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0.5-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
-
-* Sun Mar 10 2024 Michal Ambroz <rebus _AT seznam.cz> - 0.5-1
-- bump to 0.5
-
-* Sat Jan 27 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-24
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
-
-* Fri Dec 15 2023 Florian Weimer <fweimer@redhat.com> - 0.4-23
-- Further C compatibility fixes
-
-* Sat Jul 22 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-22
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
-
-* Sat Jan 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-21
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
-
-* Tue Jan 10 2023 Florian Weimer <fweimer@redhat.com> - 0.4-20
-- C99 compatibility fixes for the autoconf-style configure script (#2159628)
-
-* Sat Jul 23 2022 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-19
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild
-
-* Sat Jan 22 2022 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-18
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild
-
-* Fri Jul 23 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-17
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild
-
 * Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.4-16
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild