diff --git a/scripts/build.py b/scripts/build.py
index 3b14985..15a79b8 100755
--- a/scripts/build.py
+++ b/scripts/build.py
@@ -7,6 +7,9 @@
 
 cmd_and_dir = [
     # needs honggfuzz installed
+    ['env', 'CXX_LD=mold', 'CXX=ccache clang++', 'meson', 'setup', '--buildtype', 'debug',   '-Dcpp_std=c++23', 'builddir/clang_cpp23_debug'],
+    ['env', 'CXX_LD=mold', 'CXX=ccache g++',     'meson', 'setup', '--buildtype', 'debug',   '-Dcpp_std=c++23', 'builddir/gcc_cpp23_debug'],
+
     ['env', 'CXX_LD=mold', 'CXX=ccache clang++', 'meson', 'setup', '--buildtype', 'debug',   '-Dcpp_std=c++17', 'builddir/clang_cpp17_debug'],
     ['env', 'CXX_LD=mold', 'CXX=ccache clang++', 'meson', 'setup', '--buildtype', 'release', '-Dcpp_std=c++17', 'builddir/clang_cpp17_release'],
     ['env', 'CXX_LD=mold', 'CXX=ccache g++',     'meson', 'setup', '--buildtype', 'release', '-Dcpp_std=c++17', 'builddir/gcc_cpp17_release'],