diff --git a/monitoring/check_tootsuite_mastodon_release.sh b/monitoring/check_tootsuite_mastodon_release.sh
index 7dc99b1..20e937b 100755
--- a/monitoring/check_tootsuite_mastodon_release.sh
+++ b/monitoring/check_tootsuite_mastodon_release.sh
@@ -26,6 +26,8 @@ fi
 if [ "$LAST_VERSION" = "$INSTALLED_VERSION" ]; then
         echo "OK : Installed version is $INSTALLED_VERSION, last version is $LAST_VERSION"
             exit 0
+elif [[ $LAST_VERSION =~ rc[0-9]+$ ]]; then
+        echo "OK : Installed version is $INSTALLED_VERSION, last version is Release Candidate : $LAST_VERSION"
         else
                 echo "WARNING : new version available, installed is $INSTALLED_VERSION, last is $LAST_VERSION."
                     exit 2