diff --git a/ql/time/calendars/southkorea.cpp b/ql/time/calendars/southkorea.cpp
index 21105c7d284..12d6d517c52 100644
--- a/ql/time/calendars/southkorea.cpp
+++ b/ql/time/calendars/southkorea.cpp
@@ -205,6 +205,7 @@ namespace QuantLib {
             || (d == 14 && m == August && y == 2015)
             // Special temporary holiday
             || (d == 17 && m == August && y == 2020)
+            || (d == 2 && m == October && y == 2023)
 
             // Harvest Moon Day
             || ((d == 27 || d == 28 || d == 29) && m == September && y == 2004)
diff --git a/test-suite/calendars.cpp b/test-suite/calendars.cpp
index abb9cd1663d..9860f726540 100644
--- a/test-suite/calendars.cpp
+++ b/test-suite/calendars.cpp
@@ -1721,6 +1721,7 @@ void CalendarTest::testSouthKoreanSettlement() {
     expectedHol.emplace_back(28, September, 2023);
     expectedHol.emplace_back(29, September, 2023);
     // expectedHol.emplace_back(30, September, 2023);    // Saturday
+    expectedHol.emplace_back(2, October, 2023);
     expectedHol.emplace_back(3, October, 2023);
     expectedHol.emplace_back(9, October, 2023);
     expectedHol.emplace_back(25, December, 2023);
@@ -2467,6 +2468,7 @@ void CalendarTest::testKoreaStockExchange() {
     expectedHol.emplace_back(28, September, 2023);
     expectedHol.emplace_back(29, September, 2023);
     // expectedHol.emplace_back(30, September, 2023);    // Saturday
+    expectedHol.emplace_back(2, October, 2023);
     expectedHol.emplace_back(3, October, 2023);
     expectedHol.emplace_back(9, October, 2023);
     expectedHol.emplace_back(25, December, 2023);