diff --git a/BioArchLinux/libmaus/PKGBUILD b/BioArchLinux/libmaus/PKGBUILD
index 15396d1118..795fec7c10 100644
--- a/BioArchLinux/libmaus/PKGBUILD
+++ b/BioArchLinux/libmaus/PKGBUILD
@@ -7,10 +7,18 @@ pkgrel=4
 pkgdesc="Bioinformatics data structures and algorithms in C++"
 arch=('x86_64')
 url=https://gitlab.com/german.tischler/libmaus2
-license=('GPL2')
-source=(https://gitlab.com/german.tischler/"${pkgname}"2/-/archive/"${pkgver//_/-}"/"${pkgname}"2-"${pkgver//_/-}".tar.gz)
-sha256sums=('08e6dee0fcb68253e1edd1e442650104051b096ffa8417b05f8b6f2aa04018e4')
+license=('GPL-2.0-or-later')
+source=(https://gitlab.com/german.tischler/"${pkgname}"2/-/archive/"${pkgver//_/-}"/"${pkgname}"2-"${pkgver//_/-}".tar.gz
+	"gcc13.patch::https://gitlab.com/german.tischler/libmaus2/-/merge_requests/22.patch")
+sha256sums=('08e6dee0fcb68253e1edd1e442650104051b096ffa8417b05f8b6f2aa04018e4'
+            '3f5a37c3c0a5cf5b0252a278ea434d98bbcf044e09712a0560740275f2555c5f')
 makedepends=('make' 'gcc' 'boost')
+
+prepare() {
+  cd "${srcdir}"/libmaus2-"${pkgver//_/-}"
+  patch -p1 < $srcdir/gcc13.patch
+}
+
 build() {
   cd "${srcdir}"/libmaus2-"${pkgver//_/-}"
   ./configure --prefix="${pkgdir}"/usr --exec-prefix "${pkgdir}"/