diff --git a/docker/RO/Dockerfile b/docker/RO/Dockerfile
index 24b1425..89ed385 100644
--- a/docker/RO/Dockerfile
+++ b/docker/RO/Dockerfile
@@ -46,7 +46,12 @@
     python3-osm-rovim-openstack${RO_VERSION} python3-osm-rovim-openvim${RO_VERSION} \
     python3-osm-rovim-vmware${RO_VERSION}
 
-# ensure right version is installed as pyhton3-ccryptography install an old version
+# ensure right version is installed as python3-cryptography install an old version
+# Since release 3.4 of python3-cryptography rust is an dependency
+
+RUN DEBIAN_FRONTEND=noninteractive apt-get -y install build-essential libssl-dev libffi-dev \
+    python3-dev cargo
+
 RUN python3 -m pip install --upgrade "cryptography>=2.5"
 
 VOLUME /var/log/osm