diff --git a/Dockerfile b/Dockerfile
index 2db3e4e9c286c954b113200f19a15fe891ce57be..bd5e706588cb6f0f678cf0fd9de1bcaf83548971 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ FROM debian:bookworm
 RUN set -x && \
     apt update && \
     apt install -y --no-install-recommends \
+    gunicorn \
     python3 \
     python3-pip \
     python3-flask \