diff --git a/.gitignore b/.gitignore
index d6f9125..a406b34 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1 @@
-udns_0.0.9.tar.gz
-/udns-0.2.tar.gz
-/udns-0.4.tar.gz
+udns-*.tar.gz
diff --git a/sources b/sources
index 7111cba..7c64a46 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-51e141b044b078d71ebb71f823959c1b  udns-0.4.tar.gz
+SHA512 (udns-0.6.tar.gz) = 9846c476e23f148565d2ea986352c34a364ec5b949db3821a8ed6bdf5d33b830f0afbbcf4d441420a36c57620236a01ef04f6f8b2619f6ec64595bab5524afe1
diff --git a/udns-configure-c99.patch b/udns-configure-c99.patch
new file mode 100644
index 0000000..e1e5049
--- /dev/null
+++ b/udns-configure-c99.patch
@@ -0,0 +1,15 @@
+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 821354c..ef473a7 100644
--- a/udns.spec
+++ b/udns.spec
@@ -1,10 +1,14 @@
-Summary: DNS resolver library for both synchronous and asynchronous DNS queries
-Name: udns
-Version: 0.4
-Release: 17%{?dist}
-License: LGPLv2+
-URL: http://www.corpit.ru/mjt/udns.html
-Source: http://www.corpit.ru/mjt/udns/udns-%{version}.tar.gz
+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
+
 BuildRequires: make
 BuildRequires: gcc
 
@@ -22,7 +26,7 @@ documentation for %{name}. If you like to develop programs using %{name},
 you will need to install %{name}-devel.
 
 %prep
-%setup -q
+%autosetup -p1
 
 %build
 CFLAGS="%{optflags}" ./configure --enable-ipv6
@@ -49,6 +53,48 @@ 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