diff --git a/Dockerfile b/Dockerfile
index 455eb70..43e39a8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM python:3.10-slim-bullseye
 USER root
 WORKDIR /usr/src/app
 RUN sed -i -e's/ main/ main contrib non-free/g' /etc/apt/sources.list
-RUN apt-get update -y && apt-get install -y libttspico-utils espeak-ng espeak-ng-data espeak-ng-espeak flite sox
+RUN apt-get update -y && apt-get install -y libttspico-utils espeak-ng espeak-ng-data espeak-ng-espeak flite sox mbrola-*
 COPY requirements.txt ./
 COPY pyVoIP-1.6.4.patched-py3-none-any.whl ./
 RUN pip install --no-cache-dir -r requirements.txt