diff --git a/index.html b/index.html
index 144222b..662e779 100644
--- a/index.html
+++ b/index.html
@@ -217,6 +217,11 @@
                         enabled: true,
                         scaleFactor: 0.5
                     }
+                },
+                smooth: {
+                    type: 'cubicBezier',
+                    roundness: 0.4,
+                    forceDirection: 'horizontal'
                 }
             },
             nodes: {