diff --git a/cluster/maco.check.update.sh b/cluster/maco.check.update.sh
index a8f1656..9fbdb75 100755
--- a/cluster/maco.check.update.sh
+++ b/cluster/maco.check.update.sh
@@ -333,6 +333,8 @@ Get Maco's versions from filesystem."
 		### Get Maco's versions from webserver
 		debug_message "define_vars − \
 Get Maco's versions from webserver."
+		### TODO: Replace --silent option with --no-progress-meter once curl > v7.74.0-*
+		###       will be available on the cluster (at least buster-backports).
 		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