diff --git a/build/Dockerfile b/build/Dockerfile
index 498caf5..bd6af10 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -4,6 +4,11 @@ FROM archlinux:latest
 RUN pacman -Syu --noconfirm && \
     pacman -S --noconfirm base-devel git sudo wget jq gnupg
 
+# Import Omarchy signing key into pacman keyring
+RUN pacman-key --init && \
+    pacman-key --recv-keys 40DFB630FF42BCFFB047046CF0134EE680CAC571 --keyserver keys.openpgp.org && \
+    pacman-key --lsign-key 40DFB630FF42BCFFB047046CF0134EE680CAC571
+
 # Create build user (required for makepkg - cannot run as root)
 RUN useradd -m -G wheel builder && \
     echo "builder ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers