diff --git a/server.R b/server.R
index b57ca2d..6cdbecd 100644
--- a/server.R
+++ b/server.R
@@ -69,7 +69,11 @@ server <- function(input, output, session) {
         color = "#003063",
         fillColor = ~pal(heatmap_polygons$intensity),
         weight = 3,
-        fillOpacity = 0.8
+        fillOpacity = 0.8,
+        highlightOptions = highlightOptions(
+          weight = 6,
+          bringToFront = TRUE
+        ),
       )
       # Legende hinzufügen
       addLegend(mapproxy,