diff --git a/.gitignore b/.gitignore
index c21a7cc..83fa909 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,4 @@ archiso/airootfs/etc/pacman.d/cachyos-mirrorlist
 archiso/airootfs/etc/edition-tag
 archiso/airootfs/etc/version-tag
 archiso/airootfs/usr/local/share/steamify/
+archiso/airootfs/usr/lib/libboost_*
diff --git a/steamify-prepare.sh b/steamify-prepare.sh
index 234cff9..1783fa2 100755
--- a/steamify-prepare.sh
+++ b/steamify-prepare.sh
@@ -13,4 +13,13 @@ else
 fi
 grep -q -- '--defaults' "$dest" || { echo "This Steamify has no --defaults (needs 2.6.0 or newer)." >&2; exit 1; }
 chmod 755 "$dest"
+# Temporary: cachyos-calamares-next 3.4.2-13 is linked against Boost 1.91
+# while the repos ship 1.92, so the installer doesn't start. Boost's
+# libraries carry their version in the name: 1.91's sit next to 1.92's.
+# Drop this once CachyOS rebuilds the installer.
+boost=boost-libs-1.91.0-2-x86_64.pkg.tar.zst
+libs="$(cd "$(dirname "$0")" && pwd)/archiso/airootfs"
+curl -fsSL "https://archive.archlinux.org/packages/b/boost-libs/$boost" -o "/tmp/$boost"
+tar -xf "/tmp/$boost" -C "$libs" --wildcards 'usr/lib/libboost_*.so.1.91.0'
+rm -f "/tmp/$boost"
 echo "Steamify $(grep -m1 '^VERSION=' "$dest" | cut -d= -f2) on the ISO."