diff --git a/History.markdown b/History.markdown
index dbdd0309..78e736f6 100644
--- a/History.markdown
+++ b/History.markdown
@@ -57,6 +57,7 @@
   * Bump RuboCop to v0.79.x (#7970)
   * Remove post-install message from gemspec (#7974)
   * Return relative_url if site.url is an empty string (#7988)
+  * Attain Ruby 3.0 compatibility (#7948)
 
 ## 4.0.0 / 2019-08-19