1 files changed, 2 insertions, 0 deletions
diff --git a/icu4c/source/data/locales/root.txt b/icu4c/source/data/locales/root.txt
index e419ce9fd..8dbbee1cb 100644
--- a/icu4c/source/data/locales/root.txt
+++ b/icu4c/source/data/locales/root.txt
@@ -1713,6 +1713,7 @@ root{
                     "Taishō",
                     "Shōwa",
                     "Heisei",
+                    "Reiwa",
                 }
                 narrow{
                     "Taika (645–650)",
@@ -1951,6 +1952,7 @@ root{
                     "T",
                     "S",
                     "H",
+                    "R",
                 }
                 wide:alias{"/LOCALE/calendar/japanese/eras/abbreviated"}
             }