diff --git a/plugins/sentinel/dashboard.html b/plugins/sentinel/dashboard.html
index 8d4f573..9828821 100644
--- a/plugins/sentinel/dashboard.html
+++ b/plugins/sentinel/dashboard.html
@@ -151,7 +151,7 @@
       this.data = new Array(60).fill(0);
       this.data2 = color2 ? new Array(60).fill(0) : null;
       this.maxVal = 100;
-      this._dpr = Math.min(window.devicePixelRatio || 1, 2);
+      this._dpr = Math.min(window.devicePixelRatio || 1, 4);
       this._resize();
       var self = this;
       window.addEventListener('resize', function(){ self._resize(); });