diff --git a/netinstall.sh b/netinstall.sh
index 8814143..e1a2a40 100644
--- a/netinstall.sh
+++ b/netinstall.sh
@@ -8,12 +8,32 @@ channel=${2:-master} # if defined by 2nd argument install the defined version, o
 
 # Download and untar installation files
 cd /tmp
-curl -L -k -s https://github.com/FezVrasta/ark-server-tools/archive/${channel}.tar.gz | tar xz
+COMMIT="`curl -L -k -s https://api.github.com/repos/FezVrasta/ark-server-tools/git/refs/heads/${channel} | sed -n 's/^ *"sha": "\(.*\)",.*/\1/p'`"
+
+if [ -z "$COMMIT" ]; then
+  if [ "$channel" != "master" ]; then
+    echo "Channel ${channel} not found - trying master"
+    channel=master
+    COMMIT="`curl -L -k -s https://api.github.com/repos/FezVrasta/ark-server-tools/git/refs/heads/${channel} | sed -n 's/^ *"sha": "\(.*\)",.*/\1/p'`"
+  fi
+fi
+
+if [ -z "$COMMIT" ]; then
+  echo "Unable to retrieve latest commit"
+  exit 1
+fi
+
+mkdir ark-server-tools-${channel}
+cd ark-server-tools-${channel}
+curl -L -k -s https://github.com/FezVrasta/ark-server-tools/archive/${COMMIT}.tar.gz | tar xz
 
 # Install ARK Server Tools
-cd ark-server-tools-${channel}/tools
+cd ark-server-tools-${COMMIT}/tools
+sed -i "s|^arkstCommit='.*'$|arkstCommit='${COMMIT}'|" arkmanager
+version=`<../.version`
+sed -i "s|^arkstVersion=\".*\"|arkstVersion='${version}'|" arkmanager
 chmod +x install.sh
-sh install.sh $1 > /dev/null
+bash install.sh $1 > /dev/null
 
 status=$?
 
diff --git a/tools/arkmanager b/tools/arkmanager
index 411db05..0eaef0d 100755
--- a/tools/arkmanager
+++ b/tools/arkmanager
@@ -42,6 +42,10 @@ maxOpenFiles=100000
 arkmanagerLog="arkmanager.log"  # here are logged the actions performed by arkmanager
 arkserverLog="arkserver.log"    # here is logged the output of ShooterGameServer
 
+# Script version
+arkstVersion="1.3"
+arkstCommit=''
+
 #---------------------
 # functions
 #---------------------
@@ -577,6 +581,7 @@ doUpgrade() {
   fi
   echo "arkmanager v${arkstVersion}: Checking for updates..."
   arkstLatestVersion=`curl -s https://raw.githubusercontent.com/FezVrasta/ark-server-tools/${arkstChannel}/.version`
+  arkstLatestCommit=`curl -s https://api.github.com/repos/FezVrasta/ark-server-tools/git/refs/heads/${arkstChannel} | sed -n 's/^ *"sha": "\(.*\)",.*/\1/p'`
   if [[ $arkstLatestVersion > $arkstVersion ]]; then
     read -p "A new version was found! Do you want to upgrade ARK Server Tools to v${arkstLatestVersion}?" -n 1 -r
     echo -en "\n"
@@ -585,6 +590,14 @@ doUpgrade() {
       else
         exit 0
     fi
+  elif [[ "$arkstLatestCommit" != "$arkstCommit" ]]; then
+    read -p "A hotfix is available for v${arkstLatestVersion}.  Do you wish to install it?" -n 1 -r
+    echo -en "\n"
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+        curl -s https://raw.githubusercontent.com/FezVrasta/ark-server-tools/${arkstChannel}/netinstall.sh | $sudo bash -s ${steamcmd_user} ${arkstChannel}
+      else
+        exit 0
+    fi
   else
     echo "Your ARK server tools are already up to date"
   fi
diff --git a/tools/arkmanager.cfg b/tools/arkmanager.cfg
index e671e72..394230a 100644
--- a/tools/arkmanager.cfg
+++ b/tools/arkmanager.cfg
@@ -1,4 +1,3 @@
-arkstVersion="1.2"                                                  # used to print the version when needed and to check for updates
 arkstChannel="master"                                               # change it to a different branch to get non-stable versions
 
 # config SteamCMD