diff --git a/appliances/cisco-nxosv9k.gns3a b/appliances/cisco-nxosv9k.gns3a
index 122f653..653f492 100644
--- a/appliances/cisco-nxosv9k.gns3a
+++ b/appliances/cisco-nxosv9k.gns3a
@@ -25,6 +25,13 @@
         "kvm": "require"
     },
     "images": [
+        {
+            "filename": "nxosv-final.7.0.3.I7.3.qcow2",
+            "version": "7.0.3.I7.3",
+            "md5sum": "9d7a20367bf681a239f14097bbce470a",
+            "filesize": 983629824,
+            "download_url": "https://software.cisco.com/download/"
+        },
         {
             "filename": "nxosv-final.7.0.3.I7.2.qcow2",
             "version": "7.0.3.I7.2",
@@ -71,6 +78,13 @@
         }
     ],
     "versions": [
+        {
+            "name": "7.0.3.I7.3",
+            "images": {
+                "bios_image": "OVMF-20160813.fd",
+                "hda_disk_image": "nxosv-final.7.0.3.I7.3.qcow2"
+            }
+        },
         {
             "name": "7.0.3.I7.2",
             "images": {
diff --git a/docker/network_automation/Dockerfile b/docker/network_automation/Dockerfile
index 503194c..68c6890 100644
--- a/docker/network_automation/Dockerfile
+++ b/docker/network_automation/Dockerfile
@@ -11,7 +11,10 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get -y --no-install-rec
     && rm -rf /var/lib/apt/lists/* \
     && pip install --upgrade pip \
     && pip install cryptography netmiko napalm pyntc \
-    && pip install --upgrade paramiko && mkdir /scripts
+    && pip install --upgrade paramiko && mkdir /scripts \
+    && mkdir /root/.ssh/ \
+    && echo "KexAlgorithms diffie-hellman-group1-sha1,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1" > /root/.ssh/config \
+    && echo "Ciphers 3des-cbc,blowfish-cbc,aes128-cbc,aes128-ctr,aes256-ctr" >> /root/.ssh/config
 
 VOLUME [ "/root","/usr", "/scripts" ]
 CMD [ "sh", "-c", "cd; exec bash -i" ]