diff --git a/guide/english/d3/set-up-d3/index.md b/guide/english/d3/set-up-d3/index.md
index a31fef2205..f8ea5b29fb 100644
--- a/guide/english/d3/set-up-d3/index.md
+++ b/guide/english/d3/set-up-d3/index.md
@@ -117,3 +117,4 @@ The file d3.v5.min.js is saved in the same folder as the HTML file so that it ca
  ```
     
  #### More Information
+   * D3 version numbers make all the difference.  The primary version of D3 for sometime was version 3 and there are many example using D3v3 - D3 version 3.14 to be precise.  Since then D3v4 arrived and D3v5 is currently being distributed from the D3 GitHub site.  There are enough differences between these versions that code could behave in an unexpected way or not at all.  Always know what version you are working with and you will have fewer headaches.