diff --git a/etc/scripts/stage_docker.sh b/etc/scripts/stage_docker.sh
index 5d33a44..ad4a0b2 100755
--- a/etc/scripts/stage_docker.sh
+++ b/etc/scripts/stage_docker.sh
@@ -2,6 +2,7 @@
 set -ex
 cd "$(dirname "${BASH_SOURCE[0]}")/../.."
 mkdir -p etc/docker/_artifacts
+export LANG=C.UTF-8
 stack build Cabal # Memory
 stack install --local-bin-path=etc/docker/_artifacts "$@"
 rsync -av --delete config static etc/docker/_artifacts/