diff --git a/update.sh b/update.sh
index 69ada6b0b..3eca2ea6f 100755
--- a/update.sh
+++ b/update.sh
@@ -3,7 +3,7 @@
 ############## Begin Function Section ##############
 
 check_online_status() {
-  CHECK_ONLINE_DOMAINS=('https://github.com')
+  CHECK_ONLINE_DOMAINS=('https://github.com' 'https://hub.docker.com')
   for domain in "${CHECK_ONLINE_DOMAINS[@]}"; do
     if timeout 3 curl --head --silent --output /dev/null ${domain}; then
       return 0