[EDGENT-371] Use HTTPS to load D3.js for streaming concepts page
diff --git a/site/docs/streaming-concepts.md b/site/docs/streaming-concepts.md
index ad80eaf..a8e281d 100644
--- a/site/docs/streaming-concepts.md
+++ b/site/docs/streaming-concepts.md
@@ -20,7 +20,7 @@
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
</style>
-<script src="http://d3js.org/d3.v3.min.js"></script>
+<script src="https://d3js.org/d3.v3.min.js"></script>
<script>
var filterSvgContainer = d3.select("#filter-demo").append("svg")
.attr("width", 550)
