diff --git a/cran-comments.md b/cran-comments.md
index 6fd6042..69945c2 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -2,11 +2,13 @@
 
 ## Test environments
 
--   local R installation (Mac OS), R release
--   local R installation (Mac OS), R old release
+-   Mac OS (on GitHub actions), R release
+-   Mac OS (on GitHub actions), R old release
 -   Windows-latest (on GitHub actions), R release
+-   Windows-latest (on GitHub actions), R old release
 -   Windows (Win-builder), R devel
--   Windows (Win-builder), R old release
+-   Ubuntu (on GitHub actions), R release
+-   Ubuntu (on GitHub actions), R devel
 
 ## R CMD check results