diff --git a/dockerfiles/swh-scheduler-worker/Dockerfile b/dockerfiles/swh-scheduler-worker/Dockerfile
index f9b3681..500b8c6 100644
--- a/dockerfiles/swh-scheduler-worker/Dockerfile
+++ b/dockerfiles/swh-scheduler-worker/Dockerfile
@@ -1,15 +1,15 @@
 FROM python:3
 
 RUN export DEBIAN_FRONTEND=noninteractive && \
   apt-get update && \
   apt-get install -y \
-    libsystemd-dev postgresql-client
+    libsystemd-dev postgresql-client libpq-dev
 
-RUN pip install swh-scheduler
+RUN pip install swh-scheduler --no-binary psycopg2
 RUN mkdir /etc/softwareheritage/
 COPY scheduler.yml /etc/softwareheritage/
 COPY entrypoint.sh /
 
 ENTRYPOINT ["/entrypoint.sh"]
 
 EXPOSE 5008