diff --git a/Packages/Interval_arithmetic/version b/Packages/Interval_arithmetic/version
index fade4dcbfbf..9ab68c1edb3 100644
--- a/Packages/Interval_arithmetic/version
+++ b/Packages/Interval_arithmetic/version
@@ -1 +1 @@
-4.123 (10 Oct 2001)
+4.124 (23 Nov 2001)