diff --git a/test/intl402/RelativeTimeFormat/prototype/format/unit-invalid.js b/test/intl402/RelativeTimeFormat/prototype/format/unit-invalid.js
index 53d3729b317317cde3dfa1f8fadfbdd9e21de4b1..aa518e3bff33c13c375fd57724a50725c7cb8483 100644
--- a/test/intl402/RelativeTimeFormat/prototype/format/unit-invalid.js
+++ b/test/intl402/RelativeTimeFormat/prototype/format/unit-invalid.js
@@ -33,6 +33,16 @@ const values = [
   "MONTH",
   "QUARTER",
   "YEAR",
+  "decade",
+  "decades",
+  "century",
+  "centuries",
+  "millisecond",
+  "milliseconds",
+  "microsecond",
+  "microseconds",
+  "nanosecond",
+  "nanoseconds",
 ];
 
 for (const value of values) {
diff --git a/test/intl402/RelativeTimeFormat/prototype/formatToParts/unit-invalid.js b/test/intl402/RelativeTimeFormat/prototype/formatToParts/unit-invalid.js
index fa89d07b945dca75d9189ddba2b6d3fc9c2dfe67..77c209a5b7bca1c818008621b462727152e2cc16 100644
--- a/test/intl402/RelativeTimeFormat/prototype/formatToParts/unit-invalid.js
+++ b/test/intl402/RelativeTimeFormat/prototype/formatToParts/unit-invalid.js
@@ -33,6 +33,16 @@ const values = [
   "MONTH",
   "QUARTER",
   "YEAR",
+  "decade",
+  "decades",
+  "century",
+  "centuries",
+  "millisecond",
+  "milliseconds",
+  "microsecond",
+  "microseconds",
+  "nanosecond",
+  "nanoseconds",
 ];
 
 for (const value of values) {