diff --git a/PrusaSlicer.changes b/PrusaSlicer.changes
index dec7da4..271e7c7 100644
--- a/PrusaSlicer.changes
+++ b/PrusaSlicer.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Sun Aug 20 16:01:37 UTC 2023 - Ben Greiner <code@bnavigator.de>
+
+- Limit to CGAL < 5.6 as it introduced breaking changes which
+  PrusaSlicer is not compatible yet
+- Disable failing ix86 build
+
 -------------------------------------------------------------------
 Fri Jul 21 10:32:11 UTC 2023 - Ben Greiner <code@bnavigator.de>
 
diff --git a/PrusaSlicer.spec b/PrusaSlicer.spec
index f16ec68..884cc08 100644
--- a/PrusaSlicer.spec
+++ b/PrusaSlicer.spec
@@ -34,11 +34,11 @@ Patch2:         PrusaSlicer-2.6.0-wxWidgets-CheckResizerFlags-assert-fix.patch
 Patch3:         PrusaSlicer-drop-wx3.0.patch
 BuildRequires:  blosc-devel
 BuildRequires:  cereal-devel
-BuildRequires:  cgal-devel >= 4.13.2
 BuildRequires:  cmake
 BuildRequires:  eigen3-devel >= 3
 BuildRequires:  expat
 BuildRequires:  fdupes
+BuildRequires:  (cgal-devel >= 4.13.2 with cgal-devel < 5.6)
 # gcc v8 is required as least for charconv header. version 10 exists on 15.4 and tumbleweed
 %if 0%{?suse_version} >= 1550
 %define gcc_ver %{gcc_version}
@@ -80,6 +80,8 @@ BuildRequires:  pkgconfig(qhullcpp)
 BuildRequires:  pkgconfig(wayland-client)
 BuildRequires:  pkgconfig(wayland-egl)
 Requires:       noto-sans-fonts
+# Cannot allocate memory to build
+ExcludeArch:    %{ix86}
 
 %description
 PrusaSlicer takes 3D models (STL, OBJ, AMF) and converts them into G-code
@@ -112,15 +114,7 @@ sed -i 's|slic3r_jobs_tests.cpp||' tests/slic3rutils/CMakeLists.txt
 # https://openbuildservice.org/help/manuals/obs-user-guide/cha.obs.build_job_constraints.html
 # https://en.opensuse.org/openSUSE:Specfile_guidelines#Parallel_make
 %limit_build -m 3072
-# sse2 flags for 32-bit: see gh#prusa3d/PrusaSlicer#3781
-%ifarch %ix86
-  export CFLAGS="%optflags -mfpmath=sse -msse2"
-  export CXXFLAGS="$CFLAGS"
-%endif
 export CC=gcc-%gcc_ver CXX=g++-%gcc_ver
-# rh#2059646
-#sed -i tests/libslic3r/CMakeLists.txt -e '\@test_voronoi.cpp@d'
-
 %cmake \
   -DCMAKE_CXX_STANDARD=17 \
   -DSLIC3R_FHS=1 \