diff --git a/CHANGELOG.md b/CHANGELOG.md
index 615c628..c4cab7e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
 
 ### Fixed
 
+- **`No module named 'core'` on container restart** — `docker restart` reuses
+  the old container configuration and never applies new volume mounts from
+  `docker-compose.yml`. Added a comment to `portainer-stack.yml` and updated
+  it to include `core:/app/core:ro` and `routes:/app/routes:ro`. Solution is
+  `docker compose up -d` (recreates the container) not `docker restart`.
+
 - **Text-input turns returned 422** — `UploadFile | None = File(None)` with
   `from __future__ import annotations` caused FastAPI to treat `audio` as a
   required field even when omitted. Changed to `Optional[UploadFile] = None`
diff --git a/portainer-stack.yml b/portainer-stack.yml
index d8291a6..37c994d 100644
--- a/portainer-stack.yml
+++ b/portainer-stack.yml
@@ -1,37 +1,45 @@
 # ─────────────────────────────────────────────────────────────────────────────
-#  TTS Voice Creator - Clone and Design — Portainer Stack
+#  TTS Voice Creator - Clone and Design 2 — Portainer Stack
 #
-#  IMPORTANT: build the image on the host before deploying this stack:
+#  IMPORTANT: build the image on the host before deploying / updating this stack:
 #
-#    docker build -t tts-voice-creator-clone-and-design:latest /home/sparky/Docker/tts-voice-creator-clone-and-design/
+#    cd /home/sparky/Docker/tts-voice-creator-clone-and-design-2
+#    docker build -t tts-voice-creator-clone-and-design-2:latest .
 #
-#  Then paste this file into Portainer → Stacks → Add stack → Web editor.
+#  Then paste this file into Portainer → Stacks → Add stack → Web editor
+#  (or update the existing stack).
+#
+#  After any Python code change (core/ or routes/) you must redeploy this stack
+#  or rebuild the image — a plain container restart is not enough.
 # ─────────────────────────────────────────────────────────────────────────────
 
 services:
-  tts-voice-creator-clone-and-design:
-    image: tts-voice-creator-clone-and-design:latest
-    container_name: tts-voice-creator-clone-and-design
+  tts-voice-creator-clone-and-design-2:
+    image: tts-voice-creator-clone-and-design-2:latest
+    container_name: tts-voice-creator-clone-and-design-2
     restart: unless-stopped
 
     ports:
-      - "7860:7860"
-
-    volumes:
-      - /home/sparky/Projekte/TTS_Voices:/voices:rw
-      - tts-voice-creator-clone-and-design:/home/app/.config/voice-clone-factory
-      - /home/sparky/Docker/tts-voice-creator-clone-and-design/static:/app/static:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - "7890:7890"
 
     group_add:
       - "988"
 
+    volumes:
+      - /home/sparky/Projekte/TTS_Voices:/voices:rw
+      - tts-voice-creator-clone-and-design-2:/home/app/.config/tts-voice-creator
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      # ── Hot-reload mounts (changes apply on container recreate, not restart) ──
+      - /home/sparky/Docker/tts-voice-creator-clone-and-design-2/server.py:/app/server.py:ro
+      - /home/sparky/Docker/tts-voice-creator-clone-and-design-2/core:/app/core:ro
+      - /home/sparky/Docker/tts-voice-creator-clone-and-design-2/routes:/app/routes:ro
+      - /home/sparky/Docker/tts-voice-creator-clone-and-design-2/static:/app/static:ro
+
     environment:
       - PYTHONUNBUFFERED=1
       - VOICES_DIR=/voices
       - OUTPUT_DIR=/voices/active_voices
-      - TTS_CONTAINER_NAME=faster-qwen3-tts-voiceclone
-      - TTS_STREAM_URL=http://host.docker.internal:8023
+      - TTS_CONTAINER_NAMES=faster-qwen3-tts-voiceclone,faster-qwen3-tts-streaming
       - VOICE_DESIGN_MODEL=Qwen3-TTS-12Hz-1.7B-VoiceDesign
 
     extra_hosts:
@@ -40,9 +48,8 @@ services:
     networks:
       - dgx_net
 
-
 volumes:
-  tts-voice-creator-clone-and-design:
+  tts-voice-creator-clone-and-design-2:
 
 networks:
   dgx_net: