diff --git a/c23.patch b/c23.patch
new file mode 100644
index 0000000..3ccd25e
--- /dev/null
+++ b/c23.patch
@@ -0,0 +1,21 @@
+diff -up suite3270-4.5/x3270/CmeP.h.c23 suite3270-4.5/x3270/CmeP.h
+--- suite3270-4.5/x3270/CmeP.h.c23	2026-02-23 17:11:47.532461550 +0100
++++ suite3270-4.5/x3270/CmeP.h	2026-02-23 17:12:44.818297155 +0100
+@@ -120,16 +120,7 @@ typedef struct _CmeRec {
+  *
+  ************************************************************/
+ 
+-#if defined(__clang__) /*[*/
+-# pragma clang diagnostic push
+-# pragma clang diagnostic ignored "-Wstrict-prototypes"
+-#endif /*]*/
+-typedef void (*_XawEntryVoidFunc)();
+-#if defined(__clang__) /*[*/
+-# pragma clang diagnostic pop
+-#endif /*]*/
+-
+-#define XtInheritHighlight   ((_XawEntryVoidFunc) _XtInherit)
++#define XtInheritHighlight   (void (*)(struct _WidgetRec *)) _XtInherit
+ #define XtInheritUnhighlight XtInheritHighlight
+ #define XtInheritNotify      XtInheritHighlight
+ 
diff --git a/mkversion.patch b/mkversion.patch
new file mode 100644
index 0000000..7da52f2
--- /dev/null
+++ b/mkversion.patch
@@ -0,0 +1,12 @@
+diff -up suite3270-4.5/Common/mkversion.py.orig suite3270-4.5/Common/mkversion.py
+--- suite3270-4.5/Common/mkversion.py.orig	2026-02-23 17:23:54.155112220 +0100
++++ suite3270-4.5/Common/mkversion.py	2026-02-23 17:24:19.943983520 +0100
+@@ -111,7 +111,7 @@ def mkversion(outfile_name: str, program
+ 
+     # Get the date.
+     if 'SOURCE_DATE_EPOCH' in os.environ:
+-        now = datetime.fromtimestamp(int(os.environ['SOURCE_DATE_EPOCH'])).replace(tzinfo=timezone.utc)
++        now = datetime.utcfromtimestamp(int(os.environ['SOURCE_DATE_EPOCH']))
+     else:
+         now = datetime.now(timezone.utc)
+     builddate = datetime.strftime(now, '%a %b %d %H:%M:%S %Z %Y')
diff --git a/sources b/sources
index d55d866..0a961b7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (suite3270-4.3ga8-src.tgz) = 3ee75ca2a4681e90226b9287f05deda51ee88e5262809cd008d732b2ccc952c7312dd1f42e6d1eb793ada459d69fa206a5f89b4add2afc953eb4897c89bc9744
+SHA512 (suite3270-4.5ga5-src.tgz) = 4d80f4d31b88a5d99862b6a2c0fbb6c4f45ea55d393d306cd0cb7e989a85759da7df5afcda1ba24e6608ab9a61a5385d8d63786b5e83c6ba192d1b682546d02e
diff --git a/x3270.spec b/x3270.spec
index c8d18c4..d8ee587 100644
--- a/x3270.spec
+++ b/x3270.spec
@@ -1,16 +1,19 @@
 %global catalogue /etc/X11/fontpath.d
 
-%global majorver 4.3
+%global majorver 4.5
 Summary: An X Window System based IBM 3278/3279 terminal emulator
 Name: x3270
-Version: 4.3ga8
-Release: 2%{?dist}
+Version: 4.5ga5
+Release: 3%{?dist}
 License: BSD-3-Clause AND HPND-sell-variant AND MIT AND Apache-2.0
 URL: https://x3270.miraheze.org/wiki/Main_Page
 Source0: http://downloads.sourceforge.net/%{name}/suite3270-%{version}-src.tgz
 Source1: x3270.png
 Source2: x3270.desktop
 Patch0: x3270-3.5-paths.patch
+# workaround C23 related issues
+Patch1: c23.patch
+Patch2: mkversion.patch
 
 BuildRequires: make
 BuildRequires: ncurses-devel
@@ -25,6 +28,7 @@ Summary: IBM 3278/3279 terminal emulator for the X Window System
 BuildRequires: mkfontdir bdftopcf
 BuildRequires: libXaw-devel
 Requires: %{name} = %{version}
+Requires: xrdb
 
 %package text
 Summary: IBM 3278/3279 terminal emulator for text mode
@@ -61,7 +65,7 @@ Install the %{name}-text package if you need to access IBM hosts using an IBM
 
 
 %build
-%configure --enable-x3270 --enable-c3270 --enable-s3270 --enable-pr3287 --enable-playback
+%configure --enable-x3270 --enable-c3270 --enable-s3270 --enable-pr3287 --disable-tcl3270 --disable-b3270 --enable-playback
 make %{?_smp_mflags} CCOPTIONS="$RPM_OPT_FLAGS" LIBX3270DIR=%{_sysconfdir}
 
 
@@ -113,6 +117,37 @@ desktop-file-install \
 
 
 %changelog
+* Fri Jul 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 4.5ga5-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild
+
+* Sat Jun 13 2026 Yaakov Selkowitz <yselkowi@redhat.com> - 4.5ga5-2
+- Rebuilt for openssl 4.0
+
+* Mon Feb 23 2026 Dan Horák <dan[at]danny.cz> - 4.5ga5-1
+- updated to 4.5ga5(rhbz#2368663)
+
+* Sat Jan 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 4.4ga6-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild
+
+* Sun Nov 16 2025 Yaakov Selkowitz <yselkowi@redhat.com> - 4.4ga6-3
+- Add xrdb dependency
+
+* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 4.4ga6-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
+
+* Wed May 7 2025 Jakub Čajka <jcajka@redhat.com> 4.4ga6-1
+- updated to 4.4ga6(rhbz#2362329)
+
+* Fri Mar 28 2025 Jakub Čajka <jcajka@redhat.com> 4.4ga5-1
+- updated to 4.4ga5(rhbz#2344000)
+
+* Mon Jan 27 2025 Jakub Čajka <jcajka@redhat.com> 4.4alpha1-1
+- updated to 4.4alpha1(rhbz#2332509)
+- workaround C23 related issues(rhbz#2341559)
+
+* Sun Jan 19 2025 Fedora Release Engineering <releng@fedoraproject.org> - 4.3ga8-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
+
 * Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 4.3ga8-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild