diff --git a/monitoring/check_version.sh b/monitoring/check_version.sh
new file mode 100644
index 0000000..c68746f
--- /dev/null
+++ b/monitoring/check_version.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+#
+# Nagios plugin to check mobilizon's version
+#
+
+# program return value
+#       0 : OK
+#       1 : CRITICAL
+#       2 : WARNING new version available
+#       3 : UNKNOWN github or local repo not probable
+
+# project api for gitlab https://docs.gitlab.com/ee/api/tags.html
+# upgrade documentation https://docs.joinmobilizon.org/administration/upgrading/
+LOCAL_REPO=/srv/mobilizon.chapril.org/live
+FRAMAGIT_PROJECT_ID=20125
+
+
+function usage() {
+	echo "Usage : $0"
+}
+
+#
+if [ "$#" -ne 0 ]; then
+    usage
+else
+    lastVersion=$(curl -s https://framagit.org/api/v4/projects/$FRAMAGIT_PROJECT_ID/releases | jshon -a -e name|cut -d '"' -f2|grep -v '[\^\(alpha\)]'|head -n 1)
+    currentVersion=$(cd $LOCAL_REPO && git branch | grep '*'|cut -c 3-100 )
+
+#    echo "current version:  $currentVersion"
+#    echo "last version: $lastVersion"
+    if [ $currentVersion = $lastVersion ]; then
+	    echo "OK"
+	    result=0
+    else
+	    echo "WARNING : new version available, current is $currentVersion, last is $lastVersion."
+	    result=1
+    fi
+fi
+exit $result
+