diff --git a/docker/openstack-base/Dockerfile.j2 b/docker/openstack-base/Dockerfile.j2
index 2b136d7..56df15b 100644
--- a/docker/openstack-base/Dockerfile.j2
+++ b/docker/openstack-base/Dockerfile.j2
@@ -20,6 +20,7 @@ COPY {{ render('pip.conf.j2') }} /tmp/pip.conf
 RUN pip --no-cache-dir install -U virtualenv \
     && virtualenv /var/lib/microservices/venv \
     && mv /tmp/requirements/upper-constraints.txt /var/lib/microservices/venv/constraints.txt \
+    && sed -i 's/eventlet=.*/eventlet===0.20.1/' /var/lib/microservices/venv/constraints.txt \
     && mv /tmp/pip.conf /var/lib/microservices/venv \
     && /var/lib/microservices/venv/bin/pip install --upgrade \
         Babel \