diff --git a/plugins/vega/Histogram/test/histogram.image.js b/plugins/vega/Histogram/test/histogram.image.js
index <HASH>..<HASH> 100644
--- a/plugins/vega/Histogram/test/histogram.image.js
+++ b/plugins/vega/Histogram/test/histogram.image.js
@@ -5,5 +5,5 @@ imageTest({
   url: 'http://localhost:28000/examples/histogram',
   selector: '#vis-element',
   delay: 1000,
-  threshold: 0.001
+  threshold: 0.005
 });
test: allow bigger margin of error to account for pixelwise rendering differences