diff --git a/cran-comments.md b/cran-comments.md
index 687e2df..61bb4b0 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -7,6 +7,11 @@ about DOI links in the DESCRIPTION. The links are valid,
 but it seems the URL checker isn't working correctly for
 these DOI links.
 
+* I have reduced the runtimes of unit tests
+and examples, since automated checks showed overall checktime was over 10
+minutes on "r-devel-windows-x86_64" according to the automated CRAN checks
+when I last submitted.
+
 ## Downstream dependencies
 
 * This package does not yet have any downstream dependencies.