diff --git a/.devcontainer/backend/Dockerfile b/.devcontainer/backend/Dockerfile
index f48fb99f..99cd66d6 100644
--- a/.devcontainer/backend/Dockerfile
+++ b/.devcontainer/backend/Dockerfile
@@ -3,8 +3,6 @@ FROM python:3.11.10-bullseye
 
 ARG USER=vscode
 ARG DEBIAN_FRONTEND=noninteractive
-ARG DOCKER_GID=1003
-
 
 # 1) Toolchain + utilities for building libpostal
 RUN apt-get update && apt-get install -y --no-install-recommends \