diff --git a/install b/install
index a5860c7..14f9095 100755
--- a/install
+++ b/install
@@ -932,7 +932,7 @@ else
         wo_lib_echo "WordOps (wo) upgrade to $wo_version_new was successful!"
         wo_lib_echo "Changelog is available on https://github.com/WordOps/WordOps/releases/tag/$wo_version_new"
         echo
-        if "v3.21" in "$wo_version_new"; then
+        if [[ "$wo_version_new" == *"v3.21"* ]]; then
             wo_lib_echo "To upgrade Nginx package and configuration for HTTP/3 QUIC, use the following command"
             wo_lib_echo_info "wo stack migrate --nginx"
         fi