diff --git a/xtts/docker-compose.yml b/xtts/docker-compose.yml
index db4950f..957c79b 100644
--- a/xtts/docker-compose.yml
+++ b/xtts/docker-compose.yml
@@ -166,4 +166,5 @@ services:
       - VOXTRAL_MODEL=mistralai/Voxtral-Mini-3B-2507
       - VOXTRAL_LANGUAGE=${WHISPER_LANGUAGE:-de}
       - HUGGING_FACE_HUB_TOKEN=${HF_TOKEN:-}   # falls das Modell HF-gated ist
+      - PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True   # weniger VRAM-Fragmentierung
     restart: unless-stopped