diff --git a/docs/documentation/reference/environment-variables.md b/docs/documentation/reference/environment-variables.md
index 1c6abae8d..895c6768b 100644
--- a/docs/documentation/reference/environment-variables.md
+++ b/docs/documentation/reference/environment-variables.md
@@ -397,8 +397,8 @@ Pass `./dev.sh --require-api-keys` to make a missing deployment key fatal
 | `PGADMIN_DEFAULT_EMAIL` | `admin@lightspeed.dev` | Local pgAdmin account. |
 | `PGADMIN_DEFAULT_PASSWORD` | `lightspeed` | Local pgAdmin password. |
 | `PGADMIN_PORT` | `15080` | Host pgAdmin port. |
-| `MINIO_IMAGE` | `quay.io/minio/minio` | MinIO server image. |
-| `MINIO_MC_IMAGE` | `quay.io/minio/mc` | MinIO client image. |
+| `MINIO_IMAGE` | `chainguard/minio:latest` | MinIO server image. |
+| `MINIO_MC_IMAGE` | `chainguard/minio-client:latest` | MinIO client image. |
 | `MINIO_CONTAINER_NAME` | `lightspeed-minio` | MinIO container name. |
 | `MINIO_ROOT_USER` | `minioadmin` | Local MinIO access key. |
 | `MINIO_ROOT_PASSWORD` | `minioadmin` | Local MinIO secret key. |
diff --git a/scripts/dev/docker-compose.yaml b/scripts/dev/docker-compose.yaml
index 6ff713e83..e0af28a7e 100644
--- a/scripts/dev/docker-compose.yaml
+++ b/scripts/dev/docker-compose.yaml
@@ -39,7 +39,10 @@ services:
       - pgadmin-data:/var/lib/pgadmin
 
   minio:
-    image: ${MINIO_IMAGE:-quay.io/minio/minio}
+    # MinIO no longer publishes images to quay.io or Docker Hub; use Chainguard's build.
+    image: ${MINIO_IMAGE:-chainguard/minio:latest}
+    # Preserve write access to root-owned volumes created by the previous image.
+    user: "0:0"
     container_name: ${MINIO_CONTAINER_NAME:-lightspeed-minio}
     restart: unless-stopped
     command: server /data --console-address ":9001"
@@ -53,7 +56,7 @@ services:
       - minio-data:/data
 
   mc:
-    image: ${MINIO_MC_IMAGE:-quay.io/minio/mc}
+    image: ${MINIO_MC_IMAGE:-chainguard/minio-client:latest}
     profiles: ["tools"]
     depends_on:
       - minio