diff --git a/Dockerfile b/Dockerfile
index 3f634cc..5e7d900 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:latest
 
-RUN apk add --no-cache python3 py3-pip py3-wheel git py3-lxml py3-gevent
+RUN apk add --no-cache python3 py3-pip py3-wheel git py3-lxml py3-gevent py3-zope-interface py3-zope-event
 
 ADD . /app
 RUN pip3 install --no-cache-dir /app[full] gunicorn
diff --git a/README.md b/README.md
index d9fdf9d..f1103dc 100644
--- a/README.md
+++ b/README.md
@@ -109,6 +109,8 @@ packages:
   - python3-wheels
   - python3-lxml
   - python3-gevent
+  - python3-zope.interface
+  - python3-zope.event
   - git
   - ca-certificates