diff --git a/builder/build-iso.sh b/builder/build-iso.sh
index 980eab8..1279a55 100755
--- a/builder/build-iso.sh
+++ b/builder/build-iso.sh
@@ -7,8 +7,11 @@ pacman-key --init
 pacman --noconfirm -Sy archlinux-keyring
 pacman --noconfirm -Sy archiso git sudo base-devel jq grub
 
+# Pre-import the omarchy signing key so pacman can verify packages without a keyserver lookup
+pacman-key --add /builder/omarchy.gpg
+pacman-key --lsign-key 40DFB630FF42BCFFB047046CF0134EE680CAC571
+
 # Install omarchy-keyring for package verification during build
-# The [omarchy] repo is defined in /configs/pacman-online.conf with SigLevel = Optional TrustAll
 pacman --config /configs/pacman-online-${OMARCHY_MIRROR}.conf --noconfirm -Sy omarchy-keyring
 pacman-key --populate omarchy
 
diff --git a/builder/omarchy.gpg b/builder/omarchy.gpg
new file mode 100644
index 0000000..7c5ea36
--- /dev/null
+++ b/builder/omarchy.gpg
@@ -0,0 +1,13 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+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+=G7wU
+-----END PGP PUBLIC KEY BLOCK-----