diff --git a/translations/ja/ja.go b/translations/ja/ja.go
index 43ec648..7b887c0 100644
--- a/translations/ja/ja.go
+++ b/translations/ja/ja.go
@@ -1226,7 +1226,7 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 		},
 		{
 			tag:         "uuid5",
-			translation: "{0}はバージョンが4の正しいUUIDでなければなりません",
+			translation: "{0}はバージョンが5の正しいUUIDでなければなりません",
 			override:    false,
 		},
 		{
diff --git a/translations/ja/ja_test.go b/translations/ja/ja_test.go
index 0120760..eaa2743 100644
--- a/translations/ja/ja_test.go
+++ b/translations/ja/ja_test.go
@@ -304,7 +304,7 @@ func TestTranslations(t *testing.T) {
 		},
 		{
 			ns:       "Test.UUID5",
-			expected: "UUID5はバージョンが4の正しいUUIDでなければなりません",
+			expected: "UUID5はバージョンが5の正しいUUIDでなければなりません",
 		},
 		{
 			ns:       "Test.ISBN",