diff --git a/cluster/maco.check.update.sh b/cluster/maco.check.update.sh
index 0230bad..a8f1656 100755
--- a/cluster/maco.check.update.sh
+++ b/cluster/maco.check.update.sh
@@ -5,8 +5,8 @@
 #   1. Disable SGE queue
 #   2. Create a temp file (${MACO_LOCAL_DIR}/.maco.upgrade or ${MACO_LOCAL_DIR}/.maco.urgent.upgrade)
 
-# This script can be call by a cronjob (eg. weekly)
-# Another script should try to apply upgrades also with cron (eg. hourly)
+# This script can be call by a cronjob (eg. weekly or daily with --fail option).
+# Another script should try to apply upgrades also with cron (eg. hourly).
 
 # Vars {{{
 readonly PROGNAME=$(basename "${0}")
@@ -45,7 +45,7 @@ readonly MACO_TMP_URGENT_FILE="${MACO_LOCAL_DIR}/.maco.urgent.upgrade"
 usage() {                                                       # {{{
 
 	cat <<- EOF
-usage: $PROGNAME [-d|-h|-q|-s|-u]
+usage: $PROGNAME [-d|-h|-q|-s|-u|-w]
 
 Compare current version of Maco script with the latest and
  the urgent versions then try to prepare the host by:
@@ -58,6 +58,9 @@ EXAMPLES:
     - Verify only urgent upgrade for Maco and prepare the current host
         ${PROGNAME} --urgent
 
+    - Get Maco's new versions from a webserver instead of the filesystem
+        ${PROGNAME} --web
+
 OPTIONS :
     -d,--debug
         Enable debug messages.
@@ -76,6 +79,9 @@ OPTIONS :
 
     -u,--urgent
         Check only for urgent upgrade.
+
+    -w,--web
+        Get Maco's versions from a webserver.
 EOF
 
 
@@ -316,8 +322,21 @@ main() {                                                        # {{{
 
 	## Get all Maco's versions (date)
 	readonly CURRENT_MACO_VERSION=$(< "${MACO_LOCAL_DIR}/maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' )
-	readonly LATEST_MACO_VERSION=$(< "${MACO_INSTALL_DIR}/maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' )
-	readonly URGENT_MACO_VERSION=$(< "${MACO_INSTALL_DIR}/urgent-maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' )
+	## If WEB_MODE  wasn't defined (argument, environment variable,…) {{{
+	if [ -z "${WEB_MODE}" ]; then
+		### Get Maco's versions from filesystem
+		debug_message "define_vars − \
+Get Maco's versions from filesystem."
+		readonly LATEST_MACO_VERSION=$(< "${MACO_INSTALL_DIR}/maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' )
+		readonly URGENT_MACO_VERSION=$(< "${MACO_INSTALL_DIR}/urgent-maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' )
+	else
+		### Get Maco's versions from webserver
+		debug_message "define_vars − \
+Get Maco's versions from webserver."
+		readonly LATEST_MACO_VERSION=$(curl --silent --insecure https://store.ipr.univ-rennes1.fr/InstallProgs/ipr/maco/maco-version.txt | awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }')
+		readonly URGENT_MACO_VERSION=$(curl --silent --insecure https://store.ipr.univ-rennes1.fr/InstallProgs/ipr/maco/urgent-maco-version.txt | awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }')
+	fi
+	## }}}
 	## Convert version to timestamp
 	readonly CURRENT_TIMESTAMP=$(date -d "${CURRENT_MACO_VERSION}" "+%s")
 	readonly LATEST_TIMESTAMP=$(date -d "${LATEST_MACO_VERSION}" "+%s")
@@ -363,7 +382,6 @@ main() {                                                        # {{{
 			&& prepare_host_for_upgrade \
 			&& exit 0
 		### }}}
-
 	fi
 
 }
@@ -404,6 +422,10 @@ if [ ! "${NBARGS}" -eq "0" ]; then
 			## Check only for urgent upgrade
 			URGENT_ONLY_MODE=0
 			;;
+		-w|--web )      ## Web mode
+			## Get versions from webserver
+			WEB_MODE=0
+			;;
 		-- )            ## End of options list
 			## End the while loop
 			break