diff --git a/README.md b/README.md
index 7bd6365..ec15986 100644
--- a/README.md
+++ b/README.md
@@ -35,8 +35,9 @@ $ docker run -d --net=host -v $(pwd)/cs2-data:/home/steam/cs2-dedicated/ --name=
 ## Environment Variables
 Feel free to overwrite these environment variables, using -e (--env): 
 ```dockerfile
-STEAMUSER="changeme"        (Steam User for SteamCMD. Steam Guard must be disabled.)
+STEAMUSER="changeme"        (Steam User for SteamCMD.)
 STEAMPASS="changeme"        (Password for Steam User.)
+STEAMGUARD=""               (Optional, Steam Guard key if enabled. Use your most recent Steam Guard key.)
 CS2_PORT=27015              (CS2 server listen port tcp_udp)
 CS2_RCONPW="changeme"       (RCON password)
 CS2_PW="changeme"           (CS2 server password)
diff --git a/bullseye/Dockerfile b/bullseye/Dockerfile
index c11b44d..03a75c8 100644
--- a/bullseye/Dockerfile
+++ b/bullseye/Dockerfile
@@ -7,6 +7,7 @@ LABEL maintainer="joedwards32@gmail.com"
 
 ENV STEAMUSER "changeme"
 ENV STEAMPASS "changeme"
+ENV STEAMGUARD ""
 ENV STEAMAPPID 730
 ENV STEAMAPP cs2
 ENV STEAMAPPDIR "${HOMEDIR}/${STEAMAPP}-dedicated"
diff --git a/bullseye/etc/entry.sh b/bullseye/etc/entry.sh
index 511cf97..60001e7 100644
--- a/bullseye/etc/entry.sh
+++ b/bullseye/etc/entry.sh
@@ -4,11 +4,12 @@ mkdir -p "${STEAMAPPDIR}" || true
 # Download Updates
 
 bash "${STEAMCMDDIR}/steamcmd.sh" +force_install_dir "${STEAMAPPDIR}" \
-				+login "${STEAMUSER}" "${STEAMPASS}" \
+				+login "${STEAMUSER}" "${STEAMPASS}" "${STEAMGUARD}" \
 				+app_update "${STEAMAPPID}" \
 				+quit
 
 # Rewrite Config Files
+
 if [[ ! -z $CS2_BOT_DIFFICULTY ]] ; then
     sed -i "s/bot_difficulty.*/bot_difficulty ${CS2_BOT_DIFFICULTY}/" /home/steam/cs2-dedicated/game/csgo/cfg/*
 fi