diff --git a/de/heat-templates/scripts/instance_boot.sh b/de/heat-templates/scripts/instance_boot.sh
index 9ec1054..602cb40 100644
--- a/de/heat-templates/scripts/instance_boot.sh
+++ b/de/heat-templates/scripts/instance_boot.sh
@@ -110,12 +110,16 @@
 function download_bundles {
     local tmpd
     tmpd=$(mktemp -d)
+
+    function download_bundles_retry {
+    # Download the client certificate bundle
+        curl -k -H "Authorization: Bearer $AUTHTOKEN" https://${UCP_MASTER_HOST}/api/clientbundle -o ${tmpd}/bundle.zip
+    }
     # Download the bundle https://docs.docker.com/ee/ucp/user-access/cli/
     # Create an environment variable with the user security token
     AUTHTOKEN=$(curl -sk -d '{"username":"'$UCP_USERNAME'","password":"'$UCP_PASSWORD'"}' https://${UCP_MASTER_HOST}/auth/login | jq -r .auth_token)
 
-    # Download the client certificate bundle
-    curl -k -H "Authorization: Bearer $AUTHTOKEN" https://${UCP_MASTER_HOST}/api/clientbundle -o ${tmpd}/bundle.zip
+    retry 3 "Can't download bundle file from master." download_bundles_retry
 
     pushd $tmpd
     # Unzip the bundle.