diff --git a/openwebui/docker-compose.yml b/openwebui/docker-compose.yml
index 8d5d164..3ad4b23 100644
--- a/openwebui/docker-compose.yml
+++ b/openwebui/docker-compose.yml
@@ -20,7 +20,7 @@ services:
       - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
       - OLLAMA_BASE_URL=http://host.docker.internal:11436
       - OPENAI_API_BASE_URL=http://host.docker.internal:4000/v1
-      - OPENAI_API_KEY=dummy
+      - OPENAI_API_KEY=${LITELLM_MASTER_KEY}
       # STT — Faster-Whisper large-v3-turbo
       - AUDIO_STT_ENGINE=openai
       - AUDIO_STT_OPENAI_API_BASE_URL=http://host.docker.internal:8880/v1