diff --git a/Dockerfile.arch b/Dockerfile.arch
index 387035cd..53442a0e 100644
--- a/Dockerfile.arch
+++ b/Dockerfile.arch
@@ -6,7 +6,7 @@ ENV CC="ccache gcc"
 RUN pacman -Syu --noconfirm
 # reflector is optional - if it fails due to network issues, continue with default mirrorlist
 RUN pacman -S --needed --noconfirm reflector && \
-    (reflector --latest 20 --protocol https --sort rate --save /etc/pacman.d/mirrorlist || true)
+    (reflector --latest 20 --protocol https --save --sort rate /etc/pacman.d/mirrorlist || true)
 RUN pacman-key --init
 RUN pacman -S --needed --noconfirm \
   autoconf \
@@ -18,6 +18,7 @@ RUN pacman -S --needed --noconfirm \
   check \
   cmake \
   cmocka \
+  glibc \
   lcov \
   curl \
   debuginfod \