diff --git a/.env.example b/.env.example
index e3d6a13..d8c872b 100644
--- a/.env.example
+++ b/.env.example
@@ -139,8 +139,9 @@ SEARXNG_INSTANCE=http://localhost:8080
 # COMPOSE_FILE=docker-compose.yml:docker/gpu.nvidia.yml
 # COMPOSE_FILE=docker-compose.yml;docker/gpu.nvidia.yml    #(Windows)
 #
-# AMD ROCm (requires ROCm drivers on the host):
+# AMD ROCm (requires ROCm drivers on the host and the GID of the render group):
 # COMPOSE_FILE=docker-compose.yml:docker/gpu.amd.yml
+# RENDER_GID=992
 #
 # These overlays only expose the GPU devices. The slim Odysseus image
 # still needs CUDA/ROCm userspace via Cookbook -> Dependencies (vLLM,
diff --git a/docker/gpu.amd.yml b/docker/gpu.amd.yml
index 6a0ac39..6d427c8 100644
--- a/docker/gpu.amd.yml
+++ b/docker/gpu.amd.yml
@@ -15,4 +15,4 @@ services:
       - /dev/dri
     group_add:
       - video
-      - render
+      - ${RENDER_GID:-render}