diff --git a/lib/sanitize/config/relaxed.rb b/lib/sanitize/config/relaxed.rb
index ad9387f..d32268c 100644
--- a/lib/sanitize/config/relaxed.rb
+++ b/lib/sanitize/config/relaxed.rb
@@ -666,7 +666,9 @@ module Config
           text-decoration-color
           text-decoration-line
           text-decoration-skip
+          text-decoration-skip-ink
           text-decoration-style
+          text-decoration-thickness
           text-emphasis
           text-emphasis-color
           text-emphasis-position