diff --git a/backend/Dockerfile b/backend/Dockerfile
index bc35dac..0a44c6c 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -33,7 +33,7 @@ COPY pyproject.toml poetry.lock ./
 
 # Install dependencies using Poetry directly (simpler and more reliable)
 RUN poetry config virtualenvs.create false \
-    && poetry install --only main --no-interaction --no-ansi \
+    && poetry install --only main --no-root --no-interaction --no-ansi \
     && rm -rf $POETRY_CACHE_DIR
 
 # -----------------------------------------------------------------------------
diff --git a/backend/Dockerfile.whisper-service b/backend/Dockerfile.whisper-service
index 2dd6e4f..e16ab8b 100644
--- a/backend/Dockerfile.whisper-service
+++ b/backend/Dockerfile.whisper-service
@@ -36,7 +36,7 @@ COPY pyproject.toml poetry.lock ./
 
 # Install dependencies
 RUN poetry config virtualenvs.create false \
-    && poetry install --only main --no-interaction --no-ansi \
+    && poetry install --only main --no-root --no-interaction --no-ansi \
     && rm -rf $POETRY_CACHE_DIR
 
 # -----------------------------------------------------------------------------