diff --git a/Dockerfile b/Dockerfile
index 9c2f369..0f93c95 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -39,7 +39,7 @@ RUN deluser node
 # We want to run disseminate as a non-root user.
 ARG UID
 ARG GID
-RUN addgroup --gid $GID disseminate && \
+RUN addgroup -g $GID disseminate && \
     adduser --home /app --uid $UID -G disseminate --disabled-password disseminate
 
 # Give our non-root user access to /app