diff --git a/Dockerfile b/Dockerfile
index b5857bb..a7ff738 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM debian:buster
 RUN \
     apt-get update \
     && apt-get install --yes python3 git python3-pip libssl-dev libbz2-dev \
-    && pip3 install --no-cache-dir zeroc-ice \
+    && pip3 install --no-cache-dir zeroc-ice python-daemon \
     && apt-get purge --yes libssl-dev libbz2-dev \
     && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
     && useradd --system --no-create-home -U mumo