diff --git a/scripts/upgrade b/scripts/upgrade
index 33b8e9e..a6c105a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -113,7 +113,7 @@ fi
 # Downward compatibility: remove the v before version number
 if [[ $old_flarum_version == "v*" ]]; then $old_flarum_version = ${old_flarum_version:1}; fi
 # Check if upgrade of Flarum core is needed
-if [[ dpkg --compare-version $old_flarum_version lt $flarum_version ]]; then
+if [[ $(dpkg --compare-versions $old_flarum_version lt $flarum_version) ]]; then
 	# Upgrade Flarum
 	exec_composer $app $final_path "require -n flarum/core:'$flarum_version'"
 	pushd $final_path