diff --git a/src/angular-google-staticmaps.js b/src/angular-google-staticmaps.js
index 8ff96b5..ff2d71a 100644
--- a/src/angular-google-staticmaps.js
+++ b/src/angular-google-staticmaps.js
@@ -86,6 +86,10 @@
           el.width = parseInt(sizeBits[0], 10);
           el.height = parseInt(sizeBits[1], 10);
           el.src = ctrl.buildSourceString(attrs, markers);
+          
+          scope.$watch(attrs.markers, function (newMarkers) {
+            el.src = ctrl.buildSourceString(attrs, newMarkers);
+          });
         }
       };
     });