diff --git a/.gitignore b/.gitignore
index b7cf58c..a05bce2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,2 @@
 zvbi-0.2.33.tar.bz2
 /zvbi-0.2.42.tar.gz
-/zvbi-0.2.43.tar.gz
-/zvbi-0.2.44.tar.gz
diff --git a/sources b/sources
index 0c6fcd7..5d9c577 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (zvbi-0.2.44.tar.gz) = 74b7d44faf42f919ebd3ccb69f8567f56909075d3acf4a3b4dfcbdf85489492f27d8a04173e0010f59706356e4078cd10911945f87e2596de2b897672d1e55cb
+SHA512 (zvbi-0.2.42.tar.gz) = 65ebbab09d0180f62c2016fe3462786a6f89d0ee414f9983d1a89582bff0c17e58fcb8f45690add0314bd3b7d2de86f82e97fd49c93842e0a4f294b2b5508687
diff --git a/zvbi-0.2.42-fix_sincos_declaration.patch b/zvbi-0.2.42-fix_sincos_declaration.patch
new file mode 100644
index 0000000..be243e2
--- /dev/null
+++ b/zvbi-0.2.42-fix_sincos_declaration.patch
@@ -0,0 +1,51 @@
+From 429cf9337588d6e028bd1dc4633953b4eff09597 Mon Sep 17 00:00:00 2001
+From: Ileana Dumitrescu <ileanadumitrescu95@gmail.com>
+Date: Wed, 13 Mar 2024 17:42:18 +0200
+Subject: [PATCH] configure.ac: Move sincos function check to AC_CHECK_FUNCS
+
+---
+ configure.ac | 24 +-----------------------
+ 1 file changed, 1 insertion(+), 23 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index ba6f385..476fd69 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -89,7 +89,7 @@ AC_CHECK_FUNCS([alarm dup2 gethostbyaddr gethostbyname getopt_long gettimeofday
+ 		inet_ntoa localtime_r memmove memset mkdir modf munmap
+ 		nl_langinfo putenv select setenv setlocale socket strcasecmp
+ 		strchr strdup strerror strncasecmp strndup strrchr strstr
+-		strtol strtoul tzset strptime getaddrinfo])
++		strtol strtoul tzset strptime getaddrinfo sincos])
+ 
+ AM_CONDITIONAL(HAVE_STRPTIME, [test "x$HAVE_STRPTIME" = xyes])
+ 
+@@ -112,28 +112,6 @@ dnl autoconf 2.71 required additional quotations and usages of "AC_LANG_SOURCE".
+ dnl "Noteworthy changes in autoconf version 2.66 through 2.68"
+ dnl <https://autotools.info/forwardporting/autoconf.html>
+ 
+-dnl sincos() is a GNU extension (a macro, not a function).
+-dnl If not present we use a replacement.
+-AC_MSG_CHECKING([for sincos])
+-AC_LINK_IFELSE([AC_LANG_SOURCE([
+-#include <stdio.h>
+-#include <math.h>
+-int main (void) {
+-double s, c;
+-/* Make sure the compiler does not optimize sincos() away
+-   so the linker can confirm its availability. */
+-scanf ("%f", &s);
+-sincos (s, &s, &c);
+-printf ("%f %f", s, c);
+-return 0;
+-}
+-])],[
+-  AC_MSG_RESULT([yes])
+-  AC_DEFINE(HAVE_SINCOS, 1, [Define if the sincos() function is available])
+-],[
+-  AC_MSG_RESULT([no])
+-])
+-
+ dnl log2() is a GNU extension (a macro, not a function).
+ dnl If not present we use a replacement.
+ AC_MSG_CHECKING([for log2])
diff --git a/zvbi.spec b/zvbi.spec
index 55b88a0..ccc226d 100644
--- a/zvbi.spec
+++ b/zvbi.spec
@@ -2,14 +2,16 @@
 %define             catalogue %{_sysconfdir}/X11/fontpath.d
 
 Name:               zvbi
-Version:            0.2.44
-Release:            2%{?dist}
+Version:            0.2.42
+Release:            1%{?dist}
 Summary:            Raw VBI, Teletext and Closed Caption decoding library
 License:            GPL-2.0-or-later AND LGPL-2.0-or-later AND LGPL-2.1-or-later AND BSD-2-Clause AND MIT
 URL:                https://github.com/zapping-vbi/zvbi
 Source0:            https://github.com/zapping-vbi/zvbi/archive/v%{version}/%{name}-%{version}.tar.gz
 Patch0:             %{name}-0.2.24-tvfonts.patch
 Patch1:             %{name}-0.2.25-openfix.patch
+# slightly adapted from https://github.com/zapping-vbi/zvbi/commit/ae74ae513714f81b9b8abdb12e1b235d16fad74e.patch
+Patch2:             zvbi-0.2.42-fix_sincos_declaration.patch
 
 BuildRequires:      autoconf
 BuildRequires:      automake
@@ -59,6 +61,7 @@ Fonts from zvbi converted for use with X11
 %setup -q
 %patch -P 0 -p1
 %patch -P 1 -p1
+%patch -P 2 -p1
 
 # systemd service file
 cat >zvbid.service <<EOF
@@ -143,9 +146,7 @@ make check
 %license COPYING.md
 %doc AUTHORS BUGS ChangeLog NEWS README.md TODO
 %{_bindir}/%{name}*
-%if ! (0%{?fedora} >= 42)
 %{_sbindir}/zvbid
-%endif
 %{_unitdir}/zvbid.service
 %{_libdir}/libzvbi.so.0*
 %{_libdir}/libzvbi-chains.so.0*
@@ -168,19 +169,6 @@ make check
 
 
 %changelog
-* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 0.2.44-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
-
-* Fri Mar 14 2025 Xavier Bachelot <xavier@bachelot.org> - 0.2.44-1
-- Update to 0.2.44 (RHBZ#2351225)
-- Acknowledge for bin/sbin merge in F42+
-
-* Sun Jan 19 2025 Fedora Release Engineering <releng@fedoraproject.org> - 0.2.43-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
-
-* Tue Dec 10 2024 Xavier Bachelot <xavier@bachelot.org> - 0.2.43-1
-- Update to 0.2.43 (RHBZ#2330170)
-
 * Fri Sep 13 2024 Xavier Bachelot <xavier@bachelot.org> - 0.2.42-1
 - Update to 0.2.42