diff --git a/Dockerfile b/Dockerfile
index e5023fc..fad6885 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 #   amd64:  NVIDIA CUDA 12.6 (GPU acceleration when available, CPU fallback)
 #   arm64:  Ubuntu 26.04 (CPU-only; no CUDA on ARM)
 
-FROM --platform=$BUILDPLATFORM nvidia/cuda:12.9.2-cudnn-runtime-ubuntu22.04 AS base-amd64
+FROM --platform=$BUILDPLATFORM nvidia/cuda:13.3.0-cudnn-runtime-ubuntu22.04 AS base-amd64
 FROM --platform=$BUILDPLATFORM ubuntu:26.04 AS base-arm64
 
 # ── Build stage ───────────────────────────────────────────────────────────