diff --git a/.gitignore b/.gitignore
index c169609..bf6d6cf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@
 /giac-1.7.0.13.tar.gz
 /giac-1.7.0.29.tar.gz
 /giac-1.9.0.19.tar.gz
+/giac-1.9.0.29.tar.gz
diff --git a/giac-1.9.0-bug2792.patch b/giac-1.9.0-bug2792.patch
deleted file mode 100644
index 1c89946..0000000
--- a/giac-1.9.0-bug2792.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/src/optimization.orig.cc	2022-04-11 09:52:40.000000000 +0200
-+++ b/src/optimization.cc	2022-08-18 17:58:16.714974337 +0200
-@@ -4825,7 +4825,7 @@
-             *kt=initp[i];
-             ok=compute_obj_val(*kt->_VECTptr,*ft);
-         } else *kt=vecteur(0);
--        if ((i>=ips || !ok) && !make_random_initial_point(*kt->_VECTptr,ft))
-+        if ((i>=ips || !ok) && !make_random_initial_point(*kt->_VECTptr,&*ft))
-             return false;
-         if (is_strictly_greater(best_obj_val,*ft,ctx)) {
-             best_obj_val=*ft;
diff --git a/giac-makesrc.sh b/giac-makesrc.sh
index 4f5f382..751e640 100755
--- a/giac-makesrc.sh
+++ b/giac-makesrc.sh
@@ -5,7 +5,7 @@
 #
 
 VERSION="1.9.0"
-VERSIONREV="19"
+VERSIONREV="29"
 
 # The upstream tarball name is: giac"$SOURCEORIG".tar.gz
 SOURCEORIG=_"$VERSION"-"$VERSIONREV"
diff --git a/giac.spec b/giac.spec
index 9b93123..6b11d87 100644
--- a/giac.spec
+++ b/giac.spec
@@ -4,12 +4,12 @@
 
 %bcond_without flexiblas
 
-%global subversion .19
+%global subversion .29
 
 Name:          giac
 Summary:       Computer Algebra System, Symbolic calculus, Geometry
 Version:       1.9.0%{subversion}
-Release:       3%{?dist}
+Release:       1%{?dist}
 # LGPLv3+: src/Fl_GDI_Printer.cxx, src/Flv_List.cc, src/Flv_Table.cc
 # BSD: src/tinymt32*
 # MIT: libmicropython.a
@@ -36,11 +36,8 @@ Patch3:        %{name}-cocoalib.patch
 # https://xcas.univ-grenoble-alpes.fr/forum/viewtopic.php?f=3&t=2724
 Patch4:        %{name}-fix_graphe_file.patch
 
-# https://xcas.univ-grenoble-alpes.fr/forum/viewtopic.php?f=4&t=2792
-Patch5:        %{name}-1.9.0-bug2792.patch
-
 # Adapt to pari 2.15.0
-Patch6:        %{name}-pari2.15.patch
+Patch5:        %{name}-pari2.15.patch
 
 BuildRequires: autoconf, libtool
 BuildRequires: python3-devel
@@ -166,10 +163,7 @@ with Giac computations.
 %patch2 -p0 -b .backup
 %patch3 -p0 -b .backup
 %patch4 -p1 -b .backup
-%ifarch s390x
 %patch5 -p1 -b .backup
-%endif
-%patch6 -p1 -b .backup
 
 # Remove local intl (already bundled in fedora)
 rm -rf intl/*.h
@@ -213,7 +207,9 @@ autoupdate -vf
 autoreconf -ivf
 
 %build
-export CXXFLAGS="-std=gnu++14 %build_cxxflags"
+# https://xcas.univ-grenoble-alpes.fr/forum/viewtopic.php?f=4&t=2817
+OPT_FLAGS=$(echo "%build_cxxflags" | %{__sed} -e 's/-Werror=format-security/-Wno-error=format-security/')
+export CXXFLAGS="$OPT_FLAGS -std=gnu++14"
 export CFLAGS="%build_cflags"
 %configure --enable-static=yes --with-included-gettext=no --enable-nls=yes \
  --enable-tommath=no --enable-debug=no --enable-gc=no --enable-sscl=no \
@@ -228,7 +224,9 @@ sed -i 's|^runpath_var=LD_RUN_PATH|runpath_var=DIE_RPATH_DIE|g' libtool
 # Fix unused-direct-shlib-dependency with libgslcblas.so.0 and libgfortran.so.3
 sed -i -e 's! -shared ! -Wl,--as-needed\0!g' libtool
 
-export CXXFLAGS="-std=gnu++14 %build_cxxflags"
+# https://xcas.univ-grenoble-alpes.fr/forum/viewtopic.php?f=4&t=2817
+OPT_FLAGS=$(echo "%build_cxxflags" | %{__sed} -e 's/-Werror=format-security/-Wno-error=format-security/')
+export CXXFLAGS="$OPT_FLAGS -std=gnu++14"
 export CFLAGS_FEDORA="%build_cflags"
 export LDFLAGS_FEDORA="%build_ldflags"
 %make_build V=1
@@ -456,6 +454,9 @@ make -C check check
 %{_datadir}/giac/examples/
 
 %changelog
+* Fri Nov 18 2022 Antonio Trande <sagitter@fedoraproject.org> 1.9.0.29-1
+- Update to 1.9.0 sub-29
+
 * Tue Sep 27 2022 Jerry James <loganjerry@gmail.com> - 1.9.0.19-3
 - Rebuild for pari 2.15.0
 
diff --git a/sources b/sources
index e891fba..89b7246 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (giac-1.9.0.19.tar.gz) = ff8ad4c1176ca40811a7358224e2fbc80c47a899decb838ad8c5d036e66e41fbc905b05f1c6e689d805850fe52e118c5b8c493a2a3c76c679f1243b8f2389938
+SHA512 (giac-1.9.0.29.tar.gz) = 7e93dafa49aae5d15da5361eefaf761d0bfc70372e350436543685ff5c7ce5fb4ed648442652727f68e19a47392cf9f382e9769fdc79c8aeab27b117409cba29