diff --git a/main/vala/0001-posix-Define-_XOPEN_SOURCE-_GNU_SOURCE-for-signal-fu.patch b/main/vala/0001-posix-Define-_XOPEN_SOURCE-_GNU_SOURCE-for-signal-fu.patch
new file mode 100644
index 00000000000..bc730238385
--- /dev/null
+++ b/main/vala/0001-posix-Define-_XOPEN_SOURCE-_GNU_SOURCE-for-signal-fu.patch
@@ -0,0 +1,77 @@
+From 1d79a03d86a2f10051e902b97a3bf08cf038d06a Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Tue, 6 Aug 2024 12:53:55 +0200
+Subject: [PATCH] posix: Define _XOPEN_SOURCE/_GNU_SOURCE for signal funcs
+
+Fixes https://gitlab.gnome.org/GNOME/vala/-/issues/1558
+---
+ vapi/posix.vapi | 32 ++++++++++++++++----------------
+ 1 file changed, 16 insertions(+), 16 deletions(-)
+
+diff --git a/vapi/posix.vapi b/vapi/posix.vapi
+index caa0f41f8..91e03ff5c 100644
+--- a/vapi/posix.vapi
++++ b/vapi/posix.vapi
+@@ -1590,35 +1590,35 @@ namespace Posix {
+ 		short    si_addr_lsb;
+ 	}
+ 
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int kill (pid_t pid, int signum);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int killpg (pid_t pgpr, int signum);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_GNU_SOURCE")]
+ 	public int raise (int signum);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public void psignal (int signum, string message);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigemptyset (out sigset_t sigset);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigfillset (out sigset_t sigset);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigaddset (ref sigset_t sigset, int signo);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigdelset (ref sigset_t sigset, int __signo);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigismember (sigset_t sigset, int __signo);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigprocmask (int how, sigset_t sigset, out sigset_t oset);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigqueue (pid_t pid, int signum, sigval_t val);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigsuspend (sigset_t sigset);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigpending (sigset_t sigset);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigwait (sigset_t sigset, out int sig);
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_XOPEN_SOURCE")]
+ 	public int sigaction (int signum, sigaction_t? act, out sigaction_t? oldact);
+ 
+ 	[CCode (has_target = false, cheader_filename = "signal.h", feature_test_macro = "_GNU_SOURCE")]
+@@ -1636,7 +1636,7 @@ namespace Posix {
+ 	[CCode (cheader_filename = "signal.h")]
+ 	public sighandler_t SIG_IGN;
+ 
+-	[CCode (cheader_filename = "signal.h")]
++	[CCode (cheader_filename = "signal.h", feature_test_macro = "_GNU_SOURCE")]
+ 	public sighandler_t signal (int signum, sighandler_t? handler);
+ 
+ 	[CCode (cheader_filename = "stdio.h")]
+-- 
+2.46.0
+
diff --git a/main/vala/APKBUILD b/main/vala/APKBUILD
index 3e72ea70dd1..603ce6bc387 100644
--- a/main/vala/APKBUILD
+++ b/main/vala/APKBUILD
@@ -3,7 +3,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=vala
 pkgver=0.56.16
-pkgrel=0
+pkgrel=1
 pkgdesc="Compiler for the GObject type system"
 url="https://wiki.gnome.org/Projects/Vala"
 arch="all"
@@ -12,7 +12,9 @@ subpackages="$pkgname-devhelp $pkgname-dbg $pkgname-doc"
 depends="glib-dev"
 makedepends="libxslt-dev bash flex bison gobject-introspection-dev graphviz-dev"
 checkdepends="dbus-x11"
-source="https://download.gnome.org/sources/vala/${pkgver%.*}/vala-$pkgver.tar.xz"
+source="https://download.gnome.org/sources/vala/${pkgver%.*}/vala-$pkgver.tar.xz
+	0001-posix-Define-_XOPEN_SOURCE-_GNU_SOURCE-for-signal-fu.patch
+	"
 
 prepare() {
 	default_prepare
@@ -41,4 +43,5 @@ package() {
 
 sha512sums="
 99f69c3c7a5ed89923b55cf035c6d9a5867577b2ecff92dddf5f21aaad1281786e5fcd775833b0f251417caf857f5fe7efbf134fbded427a7b29fa3acb00203a  vala-0.56.16.tar.xz
+5106f2a3a3a4350a0e6be7985ae8dff41a8943bb3752f66d6aaa115dd7f9ceff0e1e22941869a1d02426dafbf52f4211750ad12c134144ba6d5a3f0a8076d866  0001-posix-Define-_XOPEN_SOURCE-_GNU_SOURCE-for-signal-fu.patch
 "