diff --git a/Containerfile b/Containerfile
index 0a1fd9b..ce5d521 100644
--- a/Containerfile
+++ b/Containerfile
@@ -25,6 +25,7 @@ LABEL org.opencontainers.image.source="https://code.fosterhangdaan.com/foster/ar
 LABEL org.opencontainers.image.licenses="GPL-3.0-or-later"
 
 RUN set -ex && \
+    pacman -Sy && \
     useradd --create-home builder && \
     echo "builder ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/builder && \
     echo "BUILDDIR=/build/app/" >> /home/builder/.makepkg.conf && \