diff --git a/tools/arkmanager b/tools/arkmanager
index 218a154..a53c60e 100755
--- a/tools/arkmanager
+++ b/tools/arkmanager
@@ -354,7 +354,7 @@ function getCurrentVersion(){
 #
 function getAvailableVersion(){
   rm -f "$steamcmd_appinfocache"
-  bnumber=`$steamcmdroot/$steamcmdexec +login anonymous +app_info_update 1 +app_info_print "$appid" +quit | while read name val; do if [ "${name}" == "{" ]; then parseSteamACF ".depots.branches.public" "buildid"; break; fi; done`
+  bnumber=`$steamcmdroot/$steamcmdexec +@NoPromptForPassword 1 +login ${steamlogin:-anonymous} +app_info_update 1 +app_info_print "$appid" +quit | while read name val; do if [ "${name}" == "{" ]; then parseSteamACF ".depots.branches.public" "buildid"; break; fi; done`
   return $bnumber
 }
 
@@ -605,7 +605,7 @@ doInstall() {
 
   cd "$steamcmdroot"
   # install the server
-  ./$steamcmdexec +login anonymous +force_install_dir "$arkserverroot" +app_update $appid validate +quit
+  ./$steamcmdexec +@NoPromptForPassword 1 +login ${steamlogin:-anonymous} +force_install_dir "$arkserverroot" +app_update $appid validate +quit
   # the current version should be the last version. We set our version
   getCurrentVersion
 }
@@ -749,7 +749,7 @@ doUpdate() {
 
     if [ -n "$appupdate" ]; then
       cd "$steamcmdroot"
-      ./$steamcmdexec +login anonymous +force_install_dir "$arkserverroot" +app_update $appid $validate +quit
+      ./$steamcmdexec +@NoPromptForPassword 1 +login ${steamlogin:-anonymous} +force_install_dir "$arkserverroot" +app_update $appid $validate +quit
       # the current version should be the last version. We set our version
       getCurrentVersion
       echo "`timestamp`: update to $instver complete" >> "$logdir/update.log"
@@ -797,7 +797,7 @@ doDownloadMod(){
   cd "$steamcmdroot"
 
   while true; do
-    ./$steamcmdexec +login anonymous +workshop_download_item $mod_appid $modid +quit
+    ./$steamcmdexec +@NoPromptForPassword 1 +login ${steamlogin:-anonymous} +workshop_download_item $mod_appid $modid +quit
     if [ ! -d "$moddldir" ]; then break; fi
     local newsize="`du -s "$moddldir" | cut -f1`"
     if [ $newsize -eq $dlsize ]; then break; fi
diff --git a/tools/arkmanager.cfg b/tools/arkmanager.cfg
index 7d9b65c..955a4c5 100644
--- a/tools/arkmanager.cfg
+++ b/tools/arkmanager.cfg
@@ -8,6 +8,7 @@ steamcmdroot="/home/steam/steamcmd"                                 # path of yo
 steamcmdexec="steamcmd.sh"                                          # name of steamcmd executable
 steamcmd_user="steam"                                               # name of the system user who own steamcmd folder
 steamcmd_appinfocache="/home/steam/Steam/appcache/appinfo.vdf"      # cache of the appinfo command
+#steamlogin="anonymous"                                             # Uncomment this to specify steam login instead of using anonymous login
 
 # config environment
 arkserverroot="/home/steam/ARK"                                     # path of your ARK server files (default ~/ARK)