diff --git a/Dockerfile b/Dockerfile
index 0b7275c..30c3ae0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,9 +34,9 @@ ARG METACALL_GUIX_ARCH
 
 ENV GUIX_PROFILE="/root/.config/guix/current" \
 	GUIX_LOCPATH="/root/.guix-profile/lib/locale/" \
-	LANG="en_US.UTF-8" \
-	LANGUAGE="en_US.UTF-8" \
-	LC_ALL="en_US.UTF-8" \
+	LANG="en_US.utf8" \
+	LANGUAGE="en_US.utf8" \
+	LC_ALL="en_US.utf8" \
 	SSL_CERT_DIR="/root/.guix-profile/etc/ssl/certs" \
 	GIT_SSL_FILE="/root/.guix-profile/etc/ssl/certs/ca-certificates.crt" \
 	GIT_SSL_CAINFO="$GIT_SSL_FILE"
@@ -70,6 +70,7 @@ RUN apk add --no-cache --update --virtual .build-deps shadow \
 
 # Run pull (https://github.com/docker/buildx/blob/master/README.md#--allowentitlement)
 RUN --security=insecure /entry-point.sh guix pull \
+	&& guix package -u \
 	&& guix package -i \
 		glibc-utf8-locales \
 		nss-certs